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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Type-C PD/QC/AFC Fast Charge Decoy Trigger Module – 5V/9V/12V/15V/20V Fixed Output
[Step UP Buck Converter] Type-C PD/QC/AFC Fast Charge Decoy Trigger Module – 5V/9V/12V/15V/20V Fixed Output The Type-C PD/QC/AFC Fast Charge Decoy Trigger Module is a compact USB Type-C power negotiation module designed to request a selected voltage from compatible USB Type-C fast chargers and power banks. It supports QC 2.0/3.0, AFC, PD 2.0 and PD 3.0 protocols, allowing compatible USB-C power sources to provide higher voltage outputs such as 5V, 9V, 12V, 15V or 20V. This module is useful for DIY electronics projects where a USB Type-C PD/QC charger needs to be used as a DC power source for equipment that does not have native USB-C fast-charging support. ⭐ Key Features USB Type-C fast-charge decoy/trigger module Supports PD 2.0 / PD 3.0 Supports QC 2.0 / QC 3.0 Supports Samsung AFC Fixed selectable voltage output Supports 5V / 9V / 12V / 15V / 20V output options Negotiates the required voltage from a compatible charger Suitable for USB-C power banks and PD adapters LED indicators for operating/status indication Compact and lightweight PCB design Useful for DIY power supply and electronics projects Plug-and-play operation with compatible USB-C power sources 📋 Technical Specifications Product Type: USB Type-C Fast Charge Trigger / Decoy Module Input Connector: USB Type-C Input Source: USB-C PD/QC/AFC compatible charger or power bank Supported Protocols: PD2.0, PD3.0, QC2.0, QC3.0, AFC Output Voltage: 5V / 9V / 12V / 15V / 20V Output Type: DC Voltage Selection: Fixed/selectable depending on module version Indicator: LED status indicators Application: DC power conversion and fast-charge voltage triggering 🔧 Applications Converting USB-C PD chargers into DC power supplies Powering DIY electronics projects Arduino and microcontroller projects LED applications Portable electronic equipment DIY laboratory power supplies DC motors and other suitable loads Router/modem power applications where the required voltage matches Powering electronics from USB-C PD power banks Replacing conventional DC adapters with USB-C PD sources 🛠️ How It Works The module does not boost the USB voltage itself. Instead, it communicates with a compatible USB-C power source and sends the required PD/QC/AFC negotiation request. For example, when connected to a compatible PD charger, the module can request: 5V → 9V → 12V → 15V → 20V The charger then provides the negotiated voltage at the module's DC output. ⚠️ Important Notes The connected USB-C charger or power bank must support the required fast-charging protocol and voltage. A standard 5V-only USB charger cannot normally provide 9V/12V/15V/20V through this module. Always verify the selected output voltage with a multimeter before connecting your device. Do not connect a device that requires a lower voltage than the selected output. The module is a trigger/decoy board, not a standalone DC-DC boost converter. Maximum available output power/current depends on the connected USB-C charger/power bank and the module's specifications. Do not short the output terminals. 20V output can damage 5V/9V/12V-only electronics if the wrong voltage is selected. Exact selectable voltages and current capability can vary between board versions. 📦 Package Includes 1 × Type-C PD/QC/AFC Fast Charge Decoy Trigger Module
25 Watt Soldering Iron with 3mm Tip
[Soldering Iron] 25W Soldering Iron – Deluxe Economic The 25W Soldering Iron – Deluxe Economic is a compact and practical soldering tool designed for electronics assembly, component soldering, PCB repair, circuit modifications, and general-purpose electronic work. With a 25W heating element and included 3mm spade tip, it provides a convenient solution for routine soldering applications. The soldering iron features a quick-heating element to reduce waiting time before operation. It is compatible with most standard soldering tips available on the market, making it suitable for both hobbyists and professional electronics repair work. This soldering iron is manufactured in India and may be supplied under SAMCON, Devaji, Noel, Alpine, or an equivalent manufacturer, depending on availability. ⭐ Key Features 25W power output Includes 3mm spade tip Quick-heating capability Compatible with most standard soldering tips Compact and practical design Suitable for PCB soldering and repair Durable construction for general electronics work Suitable for hobbyists, technicians, and educational use Made in India 📋 Technical Specifications Product Type: Electric Soldering Iron Model: Deluxe Economic Power Rating: 25W Tip Type: 3mm Spade Tip: 3mm Spade Tip, Pre-Installed Heating Type: Quick Heating Tip Compatibility: Most Standard Soldering Tips Manufacturer: SAMCON / Devaji / Noel / Alpine or Equivalent Country of Origin: India Application: Electronics Soldering and PCB Repair 🔧 Applications General Electronics Component Soldering PCB Assembly PCB Repair Circuit Modifications Electronics Hobby Projects DIY Electronics Educational Electronics Workshops Component Replacement Wire Soldering General Electrical & Electronic Repair 🛠️ How to Use Insert a suitable soldering tip and allow the iron to heat up. Apply solder to the heated joint and component connection to create a proper electrical and mechanical connection. After completing the work, place the soldering iron safely on a heat-resistant stand and allow it to cool before storage. 📦 Package Includes 1 × 25W Soldering Iron 1 × 3mm Spade Tip (Pre-Installed) ⚠️ Precautions The soldering tip becomes extremely hot during operation. Do not touch the heated tip or metal parts during use. Always place the soldering iron on a suitable heat-resistant stand when not in use. Use in a well-ventilated area. Wear appropriate eye protection during soldering. Keep away from children and flammable materials. Disconnect from the power supply after use. Allow the iron to cool completely before changing the tip. Lead-free solder may require higher temperatures and may not perform optimally with every 25W soldering application. ❓ Frequently Asked Questions Q: Can the 3mm spade tip be replaced?A: Yes. The supplied specification states that the soldering iron is compatible with most standard soldering tips, allowing tip replacement. Q: What safety precautions are required?A: Use the soldering iron in a well-ventilated area, use eye protection, and place it on a heat-resistant stand when not in use. Q: Is it compatible with lead-free solder?A: It can be used with lead-free solder, although lead-free soldering may require higher temperatures depending on the application.
XH-M401 DC-DC Step Down Buck Converter Power Supply Module XL4016E1
[Step Down Buck Converter] ⚡ XL4016 12A DC-DC Step-Down Buck Converter Module Adjustable Power Supply 12A High Current • Adjustable Output • Up to 96% Efficiency • Ideal for Battery Charging & Power Supply Applications The XL4016 DC-DC Step-Down Buck Converter Module is a high-performance switching voltage regulator designed to efficiently convert higher DC input voltages into a stable, adjustable lower output voltage. Based on the XL4016 PWM Buck Converter IC, this module supports input voltages from 8V to 36V DC and provides an adjustable output voltage from 1.25V to 32V, making it suitable for a wide range of power supply applications. Capable of delivering up to 12A output current with conversion efficiencies of up to 96%, the module features built-in thermal shutdown, current limiting, and short-circuit protection for safe and reliable operation. Its compact design and excellent voltage regulation make it ideal for powering electronic projects, battery charging systems, LED lighting, industrial equipment, communication devices, and laboratory power supplies. ⭐ Features Based on the XL4016 high-performance buck converter IC Wide input voltage range of 8V–36V DC Adjustable output voltage from 1.25V–32V DC Supports output current up to 12A High conversion efficiency up to 96% Built-in thermal shutdown protection Built-in over-current protection Built-in output short-circuit protection Excellent line and load regulation Compact PCB design Suitable for battery charging and DC power applications 📋 Technical Specifications Product Type: DC-DC Buck Converter Module Model: XL4016 (XH-M401 / HW-439 / HW-674) Converter Type: Step-Down (Buck) Input Voltage: 8V–36V DC Output Voltage: 1.25V–32V DC (Adjustable) Maximum Output Current: 12A Maximum Conversion Efficiency: Up to 96% Load Regulation: ±0.5% Voltage Regulation: ±0.5% Switching Frequency: 180kHz Protection Features: Over-Current Protection Thermal Shutdown Protection Output Short-Circuit Protection PCB Size: 60 × 40 mm Operating Principle: PWM Step-Down Regulation 🔧 Applications Suitable for: Adjustable DC Power Supplies Lithium Battery Charging Lead Acid Battery Charging Solar Power Systems LED Drivers LCD Monitors LCD Televisions Portable Instruments Telecommunication Equipment Networking Equipment Robotics Projects Arduino Projects ESP32 Projects Industrial Automation DIY Electronics 📦 Package Includes 1 × XL4016 12A DC-DC Step-Down Buck Converter Module ⚠️ Note This is a step-down (buck) converter; the input voltage must always be higher than the required output voltage. Adjust the output voltage before connecting sensitive electronic devices. Product may be supplied as XH-M401, HW-439, or HW-674, depending on stock availability. All variants offer equivalent functionality.
Type-C MT3608 Adjustable Dc to Dc Converter 2-24V to 5V-28V 2A
[Step UP Buck Converter] DC-DC Adjustable Boost Power Supply Module 2V–24V to 5V/9V/12V/28V 2A Type-C The DC-DC Adjustable Boost Power Supply Module is a compact step-up power conversion module designed to increase a lower DC input voltage to a higher adjustable output voltage. It supports a wide 2V–24V input range and provides an adjustable output from approximately 5V to 28V, making it suitable for battery-powered devices, microcontrollers, sensors, portable electronics and DIY power projects. With a compact 30 × 17 × 8mm design and Type-C connector, this module is convenient for projects where space and flexible power input are important. ⭐ Key Features DC-DC boost/step-up converter Wide 2V–24V input voltage range Adjustable output voltage Output options include approximately 5V, 9V, 12V and 28V Maximum output current: 2A Conversion efficiency: >93% Compact and lightweight design Type-C input connector Suitable for battery-powered applications Easy to integrate into DIY electronics projects 📋 Technical Specifications Product Type: DC-DC Boost Converter Module Input Voltage: 2V–24V DC Output Voltage: 5V–28V adjustable Maximum Output Current: 2A Peak Output Current: Up to 2A Efficiency: >93% Input Connector: USB Type-C Product Size: 30 × 17 × 8mm Weight: Approximately 4g Condition: New 🔧 Applications Arduino and microcontroller projects Raspberry Pi and electronic development projects Battery-powered devices Portable power systems GPS and sensor projects LED applications Robotics projects Motors and actuators DIY power supplies Low-voltage to higher-voltage power conversion Portable electronic equipment 🛠️ How It Works This module uses a DC-DC boost conversion circuit to increase the input DC voltage. For example: 3.7V battery → 5V output 5V input → 9V output 5V/12V input → higher adjustable output The required output voltage can be adjusted according to the application. ⚠️ Important Notes This is a boost/step-up module; the output voltage cannot be lower than the applicable input voltage range. Do not exceed the specified 24V maximum input voltage. Do not exceed the 2A maximum output current. Actual maximum output power depends on input voltage, output voltage, cooling and module operating conditions. At higher output power, adequate ventilation/cooling may be required. Always verify the output voltage with a multimeter before connecting sensitive electronics. Do not short-circuit the output. The module does not automatically regulate to 5V/9V/12V/28V; the output must be set to the required voltage. 📦 Package Includes 1 × DC-DC Adjustable Boost Module 2V–24V to 5V/9V/12V/28V, 2A, Type-C
Banana Plugs Terminal Connectors Male Red and Black Pair 4mm Good Quality
[Power Connector] 4mm Banana Plug Terminal Connectors – Male Red & Black Pair The 4mm Banana Plug Terminal Connectors are reliable and convenient connectors designed for audio equipment, industrial instruments, power testing, automotive testing, laboratory equipment, and DIY electronics projects. With a standard 4mm banana plug diameter, these connectors are compatible with most standard 4mm banana sockets and test equipment. The screw-type connector fitting allows wires to be securely connected without soldering, making installation quick, simple, and reusable. The stackable design also allows the plugs to be connected with existing 4mm banana plugs, providing greater flexibility for testing and power connections. The Red and Black color combination makes it easy to identify positive and negative connections, making these plugs suitable for power supplies, test leads, speakers, electronic instruments, and other electrical applications. ⭐ Key Features Standard 4mm banana plug diameter Red and Black male banana plug pair Screw-type wire connection No soldering required Easy installation and removal Secure and reliable electrical connection Stackable design Compatible with standard 4mm banana sockets Easy positive/negative identification Suitable for audio, testing, laboratory, and electronic applications 📋 Technical Specifications Product Type: Banana Plug Terminal Connector Connector Type: Male Banana Plug Diameter: 4mm Color: Red & Black Connection Method: Screw Terminal Soldering: Not Required Design: Stackable Current Rating: 10A Typical Voltage Rating: Typically up to 30–60V DC, depending on application Contact Type: Spring Contact Application: Audio, Power Testing & Electronics 🔧 Applications Audio Equipment Speaker Connections Power Supply Connections Laboratory Power Supplies Multimeter Test Leads Electronic Test Equipment Industrial Instruments Power Testing Automotive Testing DIY Electronics Projects Electrical Prototyping Battery Testing ⚠️ Precautions Do not exceed the connector's actual current and voltage limits. Ensure the wire is securely tightened inside the screw terminal. Always observe correct polarity when connecting DC power. Use appropriately rated wires for the desired current. Avoid short-circuiting the connector. 10A is a typical rating and should not be treated as a guaranteed manufacturer specification unless confirmed for the specific batch/model. 📦 Package Includes 1 × Red 4mm Male Banana Plug 1 × Black 4mm Male Banana Plug
4S 20A 18650 Lithium Battery Protection Board
[Lithium Battery Protection Board] The HXYP-4S-BM20 4S 20A Lithium Battery Protection Board (BMS) is a compact and reliable battery management system designed specifically for 3.7V lithium-ion 18650 rechargeable cells. This board provides complete protection and safe operation for building 4-cell (4S) battery packs with a nominal output voltage of up to 14.8V and a full charge voltage of 16.8V. Featuring a square, lightweight, and portable design, this protection board is easy to integrate into custom battery packs and compact enclosures. It allows you to connect four 18650 lithium cells simultaneously and ensures balanced and safe charging and discharging. The board includes multiple built-in safety protections such as over-charge protection, over-discharge protection, over-current protection, and short-circuit protection, helping to extend battery life and prevent damage or hazardous conditions. This module is ideal for use in DIY battery packs, power tools, solar storage systems, electric scooters, backup power supplies, robotics, and other lithium battery applications. ⭐ Key Features ✔ Designed for 4S (4-cell) 18650 lithium-ion battery packs ✔ Supports continuous current up to 15A ✔ Built-in protection for over-charge, over-discharge, over-current & short circuit ✔ Compact square PCB design – easy to install ✔ Low power consumption with ultra-low quiescent current ✔ Increases battery safety, reliability, and lifespan 🔧 Technical Specifications Model: HXYP-4S-BM20 Battery Type: 3.7V Li-ion (18650 rechargeable cells) Configuration: 4S (4 cells in series) Charging Voltage: 16.8V Maximum Continuous Current: 15A Maximum Peak Current: 20A Over-Charge Voltage: 4.25 ± 0.05V per cell Over-Discharge Voltage: 2.5 ± 0.05V per cell Quiescent Current: < 30 µA Board Size: 3.6 × 3.6 cm Country of Origin: China 🎯 Applications DIY lithium battery packs Power tools & backup batteries Solar energy storage systems Electric scooters & e-bikes Robotics & embedded systems UPS & portable power stations 🔹 Battery Connection Terminals on Board Usually marked as: B- → Battery Pack Negative (Cell 1 –) B1 → Connection between Cell 1 & Cell 2 B2 → Connection between Cell 2 & Cell 3 B3 → Connection between Cell 3 & Cell 4 B+ → Battery Pack Positive (Cell 4 +) 🔹 Output / Charge Terminals P- → Load / Charger Negative P+ → Load / Charger Positive (same as B+) 🔧 Step-by-Step Wiring Connect 4 cells in series: Cell order:Cell1 → Cell2 → Cell3 → Cell4 Then wire as: Cell1 negative → B- Cell1 positive / Cell2 negative → B1 Cell2 positive / Cell3 negative → B2 Cell3 positive / Cell4 negative → B3 Cell4 positive → B+ For charging & discharging: Charger / Load positive → P+ (or B+) Charger / Load negative → P- ⚠️ Safety Tips Always connect balance wires before main power wires Use proper insulated wires and nickel strips Do not short any terminals Use a 16.8V Li-ion charger for 4S packs Ensure BMS current rating matches your load 📦 Package Includes 1 × -4S-BM20 4S 20A Lithium Battery Protection Board (BMS) * Product Images are shown for illustrative purposes only and may differ from actual product.
6S 12A Lithium Battery 18650 Charger PCB BMS Protection Board
[Lithium Battery Protection Board] Description PCB BMS 6 Series 22V 18650 Lithium Battery Protection Board is a 6 string 22V circuit power tool mostly used for solar lighting, for dedicated 18650 battery packs. It is designed for 3.7V 18650 models lithium batteries for charging, Protection from overcharge and over-discharge. Battery protection board, as the name suggests battery protection board is mainly rechargeable (Refers to the lithium battery) and protects the integrated circuit board. Lithium battery (rechargeable type) so need protection, is determined by its own characteristics. As the lithium battery, its material determines itself can not be overcharge, over-discharge, overcurrent, short circuit, and ultra-high temperature charge and discharge, so lithium battery lithium components will always follow A protective plate with a sampling resistor, and a current fuse. Application: Battery pack Consumer electronics product 12V voltage rating Power supply Power bank and charger Features/Specs: Battery: 6 Cell Overcharge detection voltage: 4.25 ± 0.025V Over-discharge detection voltage: 2.50 ± 0.08V Overcurrent Protection: 50A Working current: 12A Operating Temperature: -40~+85°C Balanced charge: None. Short circuit protection: Yes. Applicable assembly: Nominal 3.7V Batteries / 6 strings Length: 50mm Width: 32mm Height: 4mm Weight: 6gm Package Includes: 1 x 6S 12A Lithium Battery 18650 Charger PCB BMS Protection Board Note: Product Images are shown for illustrative purposes only and may differ from the actual product
TDT LiFePO4 LFP 4S 12.8V 10A Battery Management System
[Lithium Battery Protection Board] The TDT LiFePO4 LFP 4S 12.8V 10A Battery Management System (BMS) is designed to protect and manage 4-cell LiFePO4 battery packs (12.8V nominal). It ensures safe charging and discharging by providing multiple protection functions, improving battery life and safety. This BMS board is ideal for solar energy storage, backup power systems, DIY battery packs, electric vehicles, power banks, and inverter systems using LiFePO4 cells. The board continuously monitors each cell voltage and controls charge/discharge current to prevent damage caused by overcharging, deep discharge, overcurrent, or short circuits. 🔹 Key Features Designed for 4S LiFePO4 (12.8V nominal) battery packs Continuous discharge current: 10A Overcharge protection Over-discharge protection Overcurrent protection Short-circuit protection Cell balancing function Compact and lightweight design Improves battery safety and lifespan 🔹 Technical Specifications Brand: TDT Battery Type: LiFePO4 (LFP) Series Configuration: 4S Nominal Voltage: 12.8V Maximum Charging Voltage: 14.6V Continuous Discharge Current: 10A Overcharge Protection Voltage: ~3.65V ± 0.05V per cell Over-discharge Protection Voltage: ~2.5V ± 0.1V per cell Balancing Function: Yes Short Circuit Protection: Yes Operating Temperature: -20°C to +60°C 🔹 Applications 12.8V LiFePO4 battery packs Solar storage systems UPS systems Inverter battery packs Electric scooters / small EVs DIY power backup systems Portable power stations 🔹 Wiring Instructions (Basic) B- → Battery Pack Negative B1 → Cell 1 Positive B2 → Cell 2 Positive B3 → Cell 3 Positive B4 → Cell 4 Positive P- → Output Negative P+ → Output Positive (Battery Positive) ⚠ Always connect balance wires in correct sequence to avoid damage. 🔹 Package Includes 1 × TDT 4S 12.8V 10A LiFePO4 BMS Board
TG113 Bluetooth Speaker Circuit Board Module
[Audio Receiver] TG113 Bluetooth Speaker Circuit Board Module This simple Music player Board is actually what you need when you are looking for making a music system or your home theatre. It is a very perfect and small size music player, which all the makers and hobbyists can use to design their music player device like an iPod. his module has some built-in features like Bluetooth, FM, USB, SD-Card Slot, Aux & FM along with a very small amplifier which can only drive the speaker of earphones or a very low watt speaker of .2 watt – 5 watt. But, it’s always advisable to use a good quality amplifier with this module which can drive the speaker of your requirements as there is a lot of variation in the wattage rating of speakers available in the market so its hard to predict the speaker of your choice will work with this module or not. Features: Output: Single channel Digital Audio Output Input:- USB/SD Card Slot/Bluetooth/FM/AUX. DIY speakers and modified audio/car rare weapon Support MP3/WMA/WAV/ format music Power Source: USB & Battery Battery supply voltage: 5V Features/Specs: New and improve microchip technology Working voltage: 3.7V-5V DC Inbuilt sound sensor or mic for recording purposes Support: mp3/Bluetooth/USB/aux/FM Push buttons for easy handling Excellent sound quality Widely used in portable speakers Can drive a normal speaker directly Length: 43 mm Width: 38 mm Height: 11.5 mm Weight: 8 gm Applications: Stereo Headphones Wired stereo headsets and headphones Portable Bluetooth Stereo Speakers Datasheet: Package Includes : 1 x TG113 Bluetooth Speaker Circuit Board Module Note: Product Images are shown for illustrative purposes only and may differ from the actual product.
32mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
[Sleeves] Description One of the best ways to seal your battery is by using heat shrink. It can protect your battery from short circuits, seal your battery against the weather and add a professional look to your DIY battery.PVC heat shrink is great for battery use, but it can sometimes become brittle over time and begin to crack at the edges or at sharp corners. One method around this is to use multiple layers. This strengthens the heat shrink and adds a second line of defence if one layer should begin to crack. It also allows you to use multiple pieces of heat shrink perpendicular to each other to cover all six sides of a battery instead of just four sides, thus completely sealing your battery. Adding a thin layer of foam around your battery can also help prevent the cracking of the heat shrink over time. 32mm PVC Heat Shrink Sleeve For Battery Pack Colour- Blue Radial Shrinkage- 9% – 21% Depending on the Size Material- Poly Vinyl Chloride Tensile Strength- Greater than or Equal to 4000 Pa/m2 Package Includes : 1 x 32mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
61mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
[Sleeves] Description One of the best ways to seal your battery is by using heat shrink. It can protect your battery from short circuits, seal your battery against the weather and add a professional look to your DIY battery.PVC heat shrink is great for battery use, but it can sometimes become brittle over time and begin to crack at the edges or at sharp corners. One method around this is to use multiple layers. This strengthens the heat shrink and adds a second line of defense if one layer should begin to crack. It also allows you to use multiple pieces of heat shrink perpendicular to each other to cover all six sides of a battery instead of just four sides, thus completely sealing your battery. Adding a thin layer of foam around your battery can also help prevent cracking of the heat shrink over time. 61mm PVC Heat Shrink Sleeve For Battery Pack Colour- Blue Radial Shrinkage- 9% – 21% Depending on the Size Material- Poly Vinyl Chloride Tensile Strength- Greater-than or Equal 4000 Pa/m2 Package Includes : 1 x 61mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
95mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
[Sleeves] One of the best ways to seal your battery is by using heat shrink. It can protect your battery from short circuits, seal your battery against the weather and add a professional look to your DIY battery.PVC heat shrink is great for battery use, but it can sometimes become brittle over time and begin to crack at the edges or at sharp corners. One method around this is to use multiple layers. This strengthens the heat shrink and adds a second line of defence if one layer should begin to crack. It also allows you to use multiple pieces of heat shrink perpendicular to each other to cover all six sides of a battery instead of just four sides, thus completely sealing your battery. Adding a thin layer of foam around your battery can also help prevent the cracking of the heat shrink over time. 95mm PVC Heat Shrink Sleeve For Battery Pack Colour- Blue Radial Shrinkage- 9% – 21% Depending on the Size Material- Poly Vinyl Chloride Tensile Strength- Greater than or Equal to 4000 Pa/m2 Package Includes : 1 x 95mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
Out of stock210mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
[Sleeves] Description One of the best ways to seal your battery is by using heat shrink. It can protect your battery from short circuits, seal your battery against the weather and add a professional look to your DIY battery. PVC heat shrink is great for battery use, but it can sometimes become brittle over time and begin to crack at the edges or at sharp corners. One method around this is to use multiple layers. This strengthens the heat shrink and adds a second line of defense if one layer should begin to crack. It also allows you to use multiple pieces of heat shrink perpendicular to each other to cover all six sides of a battery instead of just four sides, thus completely sealing your battery. Adding a thin layer of foam around your battery can also help prevent cracking of the heat shrink over time. 210mm PVC Heat Shrink Sleeve For Battery Pack Colour- Blue Radial Shrinkage- 9% – 21% Depending on the Size Material- Poly Vinyl Chloride Tensile Strength- Greater-than or Equal 4000 Pa/m2 Package Includes : 1 x 210mm PVC Heat Shrink Sleeve Blue for Lithium Cell Pack (1 Meter)
Daly Lifepo4 8S 24V 30A Battery Management System
[Lithium Battery Protection Board] Daly Lifepo4 8S 24V 30A Battery Management System Circuit is an 8Cell in Series 24V circuit power tool mostly used for solar lighting. It is designed for lithium Batteries for charging and protection from overcharge, and Over-discharge. The battery protection board, as the name suggests battery protection board is mainly rechargeable and protects the integrated circuit board. Lithium batteries (rechargeable type) need protection, which is determined by their own characteristics. As the Orange lithium battery, its material determines itself can not be overcharged, overcharged, overcurrent, short circuit, or ultra-high temperature charge and discharge, so lithium battery lithium components will always follow A protective plate with a sampling resistor, and a current fuse. Features: State of charge calculations. Cell over-voltage and under-voltage protection. Intelligent battery balancing (passive). Fully sealed waterproof technology, with waterproof, dustproof, shockproof, anti-squeezing, and other protective functions Cable Size (AWG): 12 Charge Current(A) :30A Length (mm): 80 Width (mm): 60 Height (mm): 10 Model: 8S 24V 30A Over Discharge Detect(V) : 2.2±0.1 Over Discharge Release(V): 2.7±0.1 Overcharge Detect Voltage(V): 3.75±0.05 overcharge Release Voltage(V): 3.55±0.05 Weight (g):: 86 Operating Temperature (°C) :-20 to 70 Shipping Weight0.165 kgShipping Dimensions16 × 11 × 6 cm Package Includes: 1 x Daly Lifepo4 8S 24V 30A Battery Management System
1.8 Inch TFT LCD Module 128 x 160 with SPI
[LED/LCD Display Module] Since the 1.8 Inch TFT LCD Module display uses 4-wire SPI to communicate and has its own pixel-addressable frame buffer, it can be used with every kind of microcontroller. Even a very small one with low memory and few pins available! The 1.8″ display has 128×160 colour pixels. Unlike the low cost “Nokia 6110” and similar LCD displays, which are CSTN type and thus have poor colour and slow refresh, this display is a true TFT! The TFT driver (ST7735R) can display full 18-bit colour (262,144 shades!). And the LCD will always come with the same driver chip so there are no worries that your code will not work from one to the other. The breakout has the TFT display soldered on (it uses a delicate flex-circuit connector) as well as an ultra-low-dropout 3.3V regulator and a 3/5V level shifter so you can use it with 3.3V or 5V power and logic. We also had a little space so we placed a microSD card holder so you can easily load full-colour bitmaps from a FAT16/FAT32 formatted microSD card. For more displays click below, LED/LCD Display Features : 1.8-inch serial SPI colour display module Support analogue SPI and hardware SPI The LCD has a wide viewing angle, the contrast is also very suitable. Good quality display. Package includes: 1 x 1.8 Inch TFT LCD Module 128 x 160 with 4 IO
ESP8266 WiFi 5V 1 Channel Relay Module Good Quality
[Relay Module] General Info : Onboard ESP8266 WIFI module, AP mode can be connected at the same time 5 client The module has two ways to work: (i) mobile phone directly mounted on the WIFI module; (ii) mobile phone and WIFI module also carried on the router. How to use : Onboard ESP8266 WIFI module has three operating modes: STA (client), AP (hot), STA + AP (client + hot), according to the work of the module to select the corresponding WIFI module mode of operation The The module needs to use the serial debugging software on the computer and USB to TTL module to send AT commands to configure the WIFI module, USB to TTL module RX, TX, GND pin, then the module on the TX, RX, GND pin, IN +, IN – 5V power supply. Usage Instructions 1) Hardware Connection: Insert the pre-programmed ESP-01/01S module into the onboard 2×4 pin female header (as shown in the diagram below). 2) Power Supply : Connect a DC 5V-12V power source to the module, with the positive terminal to VCC and the negative terminal to GND. 3) Mobile WiFi Connection : Open your phone's WLAN settings, search for and connect to the ESP8266-XXXX hotspot (default password: 12345678). 4) Launch Control APP : Run the pre-installed ESP8266 Controller application on your Android phone. 5) Configure IP Address : Enter the default IP address: 192.168.1.1 in the APP to remotely control the relay switch via your phone. Transmission distance: Open environment, the mobile phone mounted on the WIFI module when the maximum transmission distance of 400m. When the WiFI module and mobile phone at the same time carried on the router when the transmission distance according to the router’s signal weakly; Board function description : IN +, IN-: 5V power input; TX, RX, GND: Serial debug pin; Onboard the ESP8266 WIFI module has three work modes: STA (client), AP (hot), the STA + Ap( hot +client), according to the workings of a module to the corresponding choice of WIFI module working mode. Module need before use serial debugging software and USB to TTL module send serial command was carried out on the WIFI module configuration (don’t power outages after configuration is complete, as some of the parameters of WIFI module cannot be saved when the power is cut off), mobile phone and WIFI module after establishing a network connection can use the phone APP control relay. Control Commands : When cell phone equipped with WiFi module sends commands in the following order: (The default baud rate 115200) AT+CWMODE=2, namely AP mode is selected. AT+RST, reset. AT+CIPMUX=1, open multiple connections. AT+CIPSERVER=1,8080, configure the TCP server, set the port. AT+CIOBAUD=9600 set the baud rate to 9600. (working in relays to control the baud rate 9600). AT+CIFSR to view the AP mode IP address, such as the APIP, “192.168.4.1”. Cell phone WIFI signal connection name starts with AI-THINKER or ESP8266. In the “TCP connection” address and port into the APP, such as 192.168.4.1 and 8080. Click on the grey box relays can be controlled. Features: Onboard Module: ESP8266 wifi module; in AP mode it can connect with 5 Clients at the same time Operating Way: cellphone carried on wifi module; cellphone and wifi module carried on the same router, and use the APP to control relay Diode effusion protection. Short response time
USB Connector, USB Type A, USB 2.0, Receptacle, 4 Ways, PCB Mount
[USB Socket] This is a USB Type A Female Solder Jacks Connector PCB Socket. It complies with the Universal Serial Bus implementers forum. Multiple devices can be connected to this connector. Features: Durable. Robust. Supports USB 2.0 hardware. Package Includes: 1 x Amphenol USB Connector, USB Type A, USB 2.0, Receptacle, 4 Ways, PCB Mount
250W High Power Constant voltage Current Adjustable Aluminum Substrate LED Driver Module
[Step UP Buck Converter] The 250W High Power DC-DC Boost Converter with Constant Voltage & Constant Current Control is a versatile and efficient power module designed for demanding applications such as LED driving, battery charging, and power supply systems. Built on an aluminum substrate for superior heat dissipation, this module ensures stable performance even under high load conditions. It supports adjustable output voltage (10V–50V) and current control up to 6A (10A peak), making it ideal for precision applications. With high efficiency up to 96%, premium components, and dual potentiometer control, this module delivers reliable and customizable power output for both hobbyists and professionals. Key Features ⚡ High Power Output (Up to 250W)Supports high-power applications with stable voltage and current control. 🔧 Adjustable Voltage & CurrentFine-tune output using onboard multi-turn potentiometers for accurate control. 🔥 Aluminum Substrate Heat DissipationIntegrated heat sink design ensures continuous operation under heavy load. 📈 High Efficiency (92%–96%)Minimizes power loss and improves system performance. 🧠 Stable Constant Current OutputLow temperature drift (<1%) ensures reliable performance for LED applications. 🔌 Wide Application SupportSuitable for LED drivers, battery charging, solar systems, and DIY power supplies. Specifications Specification Description Module Type Non-Isolated Boost Converter Output Voltage 10V – 50V (Adjustable) Output Current Up to 6A (10A peak) Constant Current Range 0.2A – 6A Output Power Up to 250W Efficiency 92% – 96% Input Voltage 10V – 40V Static Current 10mA Mounting 4 × 3mm Screw Holes Cooling Aluminum Substrate Applications 💡 High Power LED Driver🔋 Battery Charging (Li-ion, Lead Acid, etc.)☀️ Solar Power Regulation🚗 Vehicle Power Supply Systems🔧 DIY Adjustable Power Supply💻 Laptop & Portable Device Power Usage Instructions Connect VIN+ / VIN- to input power supply Connect OUT+ / OUT- to load Adjust RV1 (Voltage) as per requirement Adjust RV2 (Current) based on load ⚠️ Always set voltage/current before connecting load Precautions Do not reverse input/output polarity Ensure proper heat dissipation at high load Input voltage must be at least 2V lower than output Avoid exceeding maximum current/power limits Do not adjust current using short circuit method Package Includes 1 × 250W High Power DC-DC Boost Converter Constant Voltage & Current Module
10A 300W DC-DC Step-Down Adjustable Constant Voltage & Constant Current Module XL4016
[Step Down Buck Converter] 10A 300W DC-DC Step-Down Adjustable Constant Voltage & Constant Current Module XL4016 The 10A 300W DC-DC Step-Down Adjustable Constant Voltage & Constant Current Module is a high-power adjustable buck converter designed for applications requiring regulated output voltage and controlled output current. It can be used as a high-power LED driver, battery charging module, regulated power supply, and vehicle power supply. The module features independent CV (Constant Voltage) and CC (Constant Current) adjustment using onboard 3296 multi-turn potentiometers, allowing precise adjustment of the output voltage and current. A dual heatsink design helps dissipate heat from the power components during high-power operation. With a maximum advertised power rating of up to 300W, the module is suitable for high-power applications when adequate cooling and an appropriate input supply are provided. For continuous high-current operation, additional forced-air cooling is recommended. ⭐ Key Features Up to 300W output power 10A maximum output current Adjustable constant voltage and constant current CV and CC independent adjustment Output voltage continuously adjustable Typical output voltage range: 1.25V–35V High-power DC-DC step-down/buck converter Dual heatsink design for improved heat dissipation Independent heatsink for MOSFET/Schottky diode section 3296 multi-turn potentiometers for precise adjustment High-frequency capacitors for reduced output ripple Large Sendust core Double pure-copper winding Suitable for LED driver and battery charging applications Additional cooling recommended for continuous high-power operation 📋 Technical Specifications Product Type: DC-DC Step-Down Buck Converter Function: Constant Voltage / Constant Current Maximum Output Power: Up to 300W Maximum Output Current: 10A Recommended Continuous Current: Up to approximately 8A with additional cooling Output Voltage: Continuously adjustable, approximately 1.25V–35V Minimum Voltage Difference: Approximately 1V Adjustment: CV / CC Multi-Turn Potentiometers Potentiometer Type: 3296 Multi-Turn Operating Temperature: -40°C to +85°C Output Ripple: Approximately 50mV under the stated test conditions Cooling: Dual Heatsink Additional Cooling: Cooling fan recommended for continuous high-power operation Converter Type: Step-Down / Buck 🔧 Applications High-Power LED Driver Constant Current LED Power Supply Lithium Battery Charging Lead-Acid Battery Charging Ni-Cd / Ni-MH Battery Charging 6V Battery Charging 12V Battery Charging 14V Battery Charging 24V Battery Charging Solar Panel Power Systems Wind Generator Applications Vehicle-Mounted Power Supply Laptop Power Supply Regulated DC Power Supply Low-Voltage Power Supply Systems 🎛️ CV & CC Adjustment The module has two independent multi-turn adjustment potentiometers: CV (Constant Voltage): Adjusts the required output voltage. CC (Constant Current): Adjusts the maximum/constant output current. Turn the potentiometers clockwise to increase and anticlockwise to decrease the corresponding setting. Use a reliable multimeter while adjusting the output voltage and current. 🔋 Battery Charger Application Determine the required battery charging voltage and charging current. Connect a suitable DC input supply to the module while observing correct polarity. Use the CV adjustment to set the required charging voltage. Use the CC adjustment to set the required charging current. Connect the battery to the output while observing correct polarity. Monitor the charging process and ensure the voltage and current remain within the battery manufacturer's specifications. 💡 Constant Current LED Driver Application Determine the LED's required operating current and maximum operating voltage. Adjust the output voltage to a low safe level before connecting the LED. Use the CC adjustment to set the required LED current. Adjust the CV setting according to the LED's required operating voltage. Connect the LED and verify the output voltage and current with a multimeter. 🛠️ Adjustment Instructions If the output voltage initially follows the input voltage and cannot be adjusted, turn the appropriate potentiometer counterclockwise for multiple turns and then adjust again. Turn the adjustment potentiometers clockwise to increase and anticlockwise to decrease. Always use a multimeter when setting voltage or current. The potentiometer closest to the output side is specified for CC/current adjustment. The potentiometer closest to the input side is specified for CV/voltage adjustment. 📦 Package Includes 1 × 10A 300W DC-DC Step-Down Adjustable Constant Voltage & Constant Current Module ⚠️ Precautions This is a step-down (buck) converter; the input voltage must be higher than the required output voltage. Do not exceed the module's maximum voltage, current, or power limits. 300W is the maximum advertised power rating; actual continuous power depends on input voltage, output voltage, current, efficiency, and cooling. For continuous high-current operation, use a cooling fan with the heatsink. Do not short-circuit the output. Observe correct input and output polarity. Use appropriate protection when charging batteries. Never leave a battery charging unattended. Ensure the module's heatsink does not become excessively hot during operation.
Out of stockDC 5V 7010 Oil Containing Cooling Fan with XH2.54-2P 25CM Cable Size:70*70*10MM
[Cooling FAN] This is best quality 7010 5V Cooling Fan. Use this compact 5V fan to keep your projects cool. It is very easy to install and uninstall with easy mounting and a Connector to connect onboard. This Fan is also always in demand for High Ampere Motor driver as well as PC CPU Box Specifications and Features: 70 x 70 x 10 mm casing Frame size 60 mm mounting hole spacing Cable Length 25 CM Colour: Black Operating Voltage (VDC): 5V Max. Operating Current (mA): 100 Connector: XH2.54-2P Material: High-Quality Plastic Package Includes: 1 x 7010 5V Cooling Fan
Out of stock4 Way/Pole Speaker Terminals Long Socket/Block/Connector With Push Release
[Terminal Connector] Description Generally designed for speakers, amplifiers, and music players, these terminals have multiple uses in applications requiring quick equipment interconnection as they come with push release and an Insert mechanism to easily interconnect two devices with the wires. The spring-loaded mechanism is very easy to use, when you want to connect the device, accomplish it just by pushing the lever down and insert the wire and when you want to release the existing wire then just bring that lever down again and now you can take out your wire and disconnect your device. This Terminal block or connector comes with easy to mount two through holes which allow the user to easily screw-mount it to any application area. It's mostly used where the devices are not in a fixed place or always in changing its place like in DJ shows or music events where the location of events keep on changing and thus the equipment/devices used also have to be mobile and need to be connected with such connectors which are easy to plug in and plug out whenever needed. Feature Used where easy accessibility and fast connection are a priority. Generally designed for speakers, amplifiers and music players, and other quick-connect devices. Easy to Mount with two mounting holes Specification Size: 64x18mm Weight: 10gm per piece. Mounting Hole Pitch: 3mm Package 1x 5 (4 Way/Pole Speaker Terminals Block/Connector With Push Release/Insert Spring Loaded Mechanism.) OR 1 x 10 (4 Way/Pole Speaker Terminals Block/Connector With Push Release/Insert Spring Loaded Mechanism.)
Out of stock125kHz RFID Tag with Keychain
[Proximity Sensor] 125 KHz RFID Key Fob Proximity Token Tag This is 125K RFID Tag. The RFID technology is used for sensing and identifying tagged people and objects for access control, automation, and a whole range of different applications. Operating on a frequency of 125kHz, these tokens are all pre-programmed with unique ID numbers to communicate wirelessly with RFID Readers over distances of around 10cm or less. This means you can attach it to vehicles or items, keyrings, or even pets’ collars to keep track of the location via an array of readers in the office, warehouse, or home. Each RFID tag comes attached to a small keyring, within a little blue housing. This 125KHz RFID Tag makes them easy to distribute while maintaining a fair amount of discretion. Additionally, the process of matching tags to readers is also very simple as well, as all you have to do is tell the RFID Reader that you are adding a token, and then hold the token nearby. Then, when the token passes by the reader, the system can identify and log the ID number and time, or can even open up doors or other access ways automatically. This basic RFID tag works in the 125kHz RF range and comes with a unique 32-bit ID. It is not reprogrammable. This blank, smooth, and mildly flexible RFID tag is ready for your logo (or hand-drawn scribble). Designed for the RFID 125KHZ duplicator. can copy all the ID cards, such as Access Card, District Card, Parking, etc. Note: The color and design of the tag will be shipped randomly depending upon availability.
XL4015 5A Constant Current / Voltage LED Drives Lithium Battery Charging Module
[Step Down Buck Converter] ⚡ XL4015 5A DC-DC Buck Converter Constant Current & Constant Voltage Lithium Battery Charging Module (75W) Adjustable Output • CC/CV Mode • Up to 5A Output • Ideal for Battery Charging & LED Driver Applications The XL4015 5A DC-DC Buck Converter Module is a high-efficiency step-down (buck) voltage regulator designed for applications requiring constant voltage (CV) and constant current (CC) operation. Based on the reliable XL4015 switching regulator IC, this module provides an adjustable output voltage from 1.25V to 36V with output currents up to 5A and a maximum output power of 75W. The module features independent adjustment for both output voltage and output current, making it ideal for charging lithium-ion batteries, LiFePO₄ batteries, lead-acid batteries, and NiMH battery packs. It can also be used as a high-power LED driver, laboratory power supply, solar charging controller, and various DIY electronics projects. Built-in current limiting, short-circuit protection, and over-temperature protection ensure reliable and safe operation. The onboard LED indicators clearly display whether the module is operating in Constant Voltage (CV) mode or Constant Current (CC) mode, making setup and monitoring simple. ⭐ Features Based on the XL4015 high-efficiency buck converter IC Adjustable constant voltage (CV) output Adjustable constant current (CC) output Output current up to 5A Maximum output power 75W High conversion efficiency up to 96% LED indicators for CV and CC modes Short-circuit protection Over-temperature protection Suitable for lithium battery charging Can be used as a high-power LED driver Compact PCB design with mounting holes 📋 Technical Specifications Product Type: DC-DC Buck Converter Module IC Model: XL4015 Converter Type: Step-Down (Buck) Input Voltage: 4V–38V DC Output Voltage: 1.25V–36V DC (Adjustable) Output Current: Adjustable, Up to 5A Maximum Output Power: 75W Operating Frequency: 180KHz Conversion Efficiency: Up to 96% Operating Temperature: -40°C to +85°C Operating Modes: Constant Voltage (CV) / Constant Current (CC) Current Limiting: Yes Short Circuit Protection: Yes (Current Limited) Over Temperature Protection: Yes Input Reverse Polarity Protection: No Mounting Hole Diameter: 3mm Input Connection: VIN+ / VIN- Output Connection: VOUT+ / VOUT- Dimensions: 50 × 26 × 12 mm Weight: Approx. 33g 🔧 Applications Suitable for: Lithium-Ion Battery Chargers LiFePO₄ Battery Chargers Lead Acid Battery Charging NiMH & NiCd Battery Packs Solar Charging Systems Wind Power Systems High Power LED Drivers Adjustable DC Power Supply Laboratory Power Supply DIY Electronics Projects Robotics Projects Arduino Projects Industrial Equipment Automotive Electronics 📦 Package Includes 1 × XL4015 5A Constant Current / Constant Voltage DC-DC Buck Converter Module ⚠️ Note This module is a step-down (buck) converter; the input voltage must always be higher than the desired output voltage. The module does not include reverse polarity protection. Please ensure correct input polarity before powering the module. Product images are for reference only. The actual product may vary slightly depending on the manufacturing batch.
6S 20A Li-ion Lithium Battery 24V 18650 Charger Protection Board Module
[Lithium Battery Protection Board] 6S 20 A Li-ion Lithium Battery 24V 18650 Charger Protection Board Module is a small PCB mount Li-ion Lithium Battery charger protection module. This small battery charger protection module comes with various features like Short circuit protection, Overcharge protection, Over-discharge protection, Overcurrent protection. It is very easy to install and convenient to use in all your DIY portable projects. Features: Battery protection board is mainly for the rechargeable battery (generally refer to as lithium battery) to protect the role of the integrated circuit board. Lithium battery (rechargeable) needs protection, which is determined by its own characteristics. As the material of the lithium battery itself determines that it cannot overcharge, overflowing, short-circuiting, and super high temperature. Charging and discharging of lithium battery will always follow a protective plate with a sampling resistance and a current safety device. Instantaneous discharge current: 25A Charging voltage: 25.5V Charging current: 20 A (MAX) Overcharge detection voltage: 4.28 0.05V Overcharge protection delay: 0.1S Over discharge detection voltage: 2.55 0.08V Overcharge release voltage: 4.08 0.05V Over discharge detection delay: 0.1S The over discharge release voltage: 2.9 0.1V Overcurrent detection voltage: 150mV Overcurrent detection delay: 9MS The Overcurrent protection current: 30 3A Overcurrent protection release condition: Disconnect the load Short circuit detection delay: 250uS Short circuit protection Release condition: disconnect negative open Main circuit conduction resistance: 20m Working current: 30uA Sleep current (battery over discharge) 10uA Temperature range: -30 / + 80°C Connections: MB: The Common connection point between the batteries. B+: Battery V+ Positive B-: Battery V- Negative P+: Charging V+ P-: Charging V- 1 x 6S 20 A Li-ion Lithium Battery 24V 18650 Charger Protection Board Module * Product Images are shown for illustrative purposes only and may differ from actual product.