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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Logitech G502 HERO
11-button wired mouse with HERO 25K sensor. Adjustable weight, classic shape. Heavyweight comfort for long sessions.
Out of stockSoldering Iron Tip Set (5 shapes)
Replacement tips for 936/900M iron — chisel, conical, bevel, knife, fork.
26650 Battery Holder / Battery Spacer 2×1 – 26.3mm Bore Diameter
[Lithium Battery Holder] 26650 Battery Holder / Battery Spacer 2×1 – 26.3mm Bore Diameter The 26650 Battery Holder / Battery Spacer 2×1 is a cylindrical battery spacer designed to securely arrange 26650 lithium-ion battery cells while building multi-cell battery packs. Made from flame-retardant ABS+PC material, it provides a strong and stable structure while allowing air circulation around the cells. The holder features interlocking slots on the edges, allowing multiple spacers to be joined together to create different battery-pack sizes and configurations. After welding nickel strips, the assembled battery pack can achieve a solid and reliable structure without requiring additional connecting hardware. ⭐ Key Features Designed for 26650 cylindrical lithium-ion cells 2 × 1 configuration 26.3mm bore diameter Made from flame-retardant ABS+PC material High-temperature resistant construction Crack-resistant design Interlocking slots for connecting multiple spacers Allows flexible battery-pack configurations Provides mechanical support for battery cells Helps maintain proper spacing between cells Suitable for high-current battery-pack construction Helps improve battery-pack stability and reliability Allows airflow around the cells for heat dissipation 📋 Technical Specifications Product Type: Battery Holder / Battery Spacer Compatible Cell: 26650 cylindrical battery Configuration: 2 × 1 Number of Cells: 2 Bore Diameter: 26.3mm Material: Flame-retardant ABS+PC Construction: Interlocking modular design Mounting: Multiple spacers can be joined together Application: Lithium battery pack assembly Cell Type: Cylindrical Li-ion cells 🔧 Applications 26650 lithium-ion battery packs E-bike battery packs Electric scooter battery packs Electric vehicle battery packs Power-tool battery packs DIY high-current battery packs UPS battery systems Solar energy storage packs Portable power stations Robotics battery packs Custom lithium battery assemblies 🛠️ How to Use The spacer is designed to hold two 26650 cells in a 2×1 arrangement. Multiple spacers can be connected through the slots provided around the edges to create larger battery-pack configurations. For a complete battery pack: Cell → Spacer → Nickel Strip Welding → Additional Spacers → Battery Pack For mechanical support, spacers can be positioned at the top and bottom of the cells. Important: For each individual battery cell, 2 spacers are recommended—one at the top and one at the bottom. 💡 Advantages Simple Assembly: Easy to arrange cylindrical cells. Flexible Design: Multiple spacers can be interconnected to create different pack shapes. Strong Construction: Helps keep cells firmly positioned. Heat Dissipation: Provides spacing between cells and allows airflow. Reliable Battery Pack: Helps make the completed pack mechanically stable. Suitable for Complex Packs: Useful for custom battery configurations, including e-bike and high-current applications. ⚠️ Important Notes This product is only a battery holder/spacer; batteries are not included. The 26.3mm bore is intended for compatible 26650 cells. Check your actual cell diameter before purchase. Do not force oversized cells into the holder. Battery cells should be properly insulated and securely assembled. Use suitable nickel strip and an appropriate spot-welding method. Use a suitable BMS/protection system for the completed lithium battery pack. Battery cells should be properly matched before assembling a multi-cell pack. 2 spacers are recommended per individual cell, one on each end. Keep the battery assembly away from excessive heat, moisture and physical damage. 📦 Package Includes 1 × 26650 Battery Holder / Battery Spacer – 2×1, 26.3mm Bore Diameter Note: Battery cells, nickel strips and BMS are not included.
48mm Square Internal Magnet Speaker – 4Ohms 5W
[Speakers] 48mm Square Internal Magnet Speaker – 4Ω 5W The 48mm Square Internal Magnet Speaker is a compact full-range audio driver designed for clear and efficient sound reproduction in space-constrained applications. With a 4Ω impedance and 5W power rating, this speaker is suitable for Bluetooth speakers, portable audio systems, DIY speaker projects and embedded electronic devices. Its square frame allows convenient mounting inside compact enclosures and panels. ⭐ Key Features Compact square speaker design 4Ω impedance 5W power rating Internal magnet construction Full-range audio output Compact size for space-limited applications Easy to install inside speaker enclosures Suitable for DIY and commercial audio projects Lightweight and practical design 📋 Technical Specifications Speaker Type: Internal Magnet Speaker Shape: Square Speaker Size: 48mm class Model: 4Ω 5W Impedance: 4Ω Power Rating: 5W Magnet Type: Internal Magnet Audio Type: Full-range Mounting Type: Panel / Enclosure Mount Dimensions: 47 × 29 × 23mm Application: Compact audio systems, DIY electronics and portable speakers 🔧 Applications Bluetooth speaker systems Portable speakers DIY speaker projects Compact audio enclosures Embedded audio systems Intercom systems Alert and notification devices Educational electronics projects Consumer electronic devices Custom audio projects 🛠️ Installation Connect the speaker to a compatible amplifier with a 4Ω output. Ensure the amplifier's output power is suitable for the speaker's 5W rating. Mount the speaker securely inside the enclosure to reduce unwanted vibration. Observe correct speaker polarity when connecting multiple speakers. 📦 Package Includes 1 × 48mm Square Internal Magnet Speaker Impedance: 4Ω Power: 5W ⚠️ Precautions Do not exceed the 5W rated power for prolonged operation. Use a compatible 4Ω amplifier. Avoid short-circuiting the speaker terminals. Keep away from moisture, excessive heat and physical damage. Ensure proper mounting to minimize vibration and unwanted noise. Actual sound quality depends on the amplifier, enclosure and application.
2 Inch 4 Ohms 5Watt Internal Magnet Speaker with Frame
[Speakers] 2-Inch Internal Magnet Speaker with Frame – 53×29×23mm 4Ω 5W The 2-Inch Internal Magnet Speaker with Frame is a compact and efficient audio driver designed for DIY electronics, portable audio devices, alarms, toys, embedded systems, and other space-constrained applications. Featuring an internal magnet design and durable frame construction, this speaker provides clear and balanced sound output while maintaining a compact footprint. With dimensions of 53×29×23mm, 4Ω impedance, and a 5W power rating, this speaker is suitable for small amplifier projects and electronic devices requiring a compact audio solution. The mounting frame makes installation convenient in custom enclosures and equipment. ⭐ Key Features 2-Inch compact speaker design Internal magnet structure 4Ω impedance 5W power rating Durable metal frame construction Clear and balanced sound output Compact and space-saving design Easy mounting with frame and screw slots Suitable for low and medium-power audio applications Ideal for DIY and OEM applications 📋 Technical Specifications Product Type: Dynamic Internal Magnet Speaker Speaker Size: 2 Inch Dimensions: 53 × 29 × 23mm Impedance: 4Ω Power Rating: 5W Magnet Type: Internal Magnet Magnet Material: Ferrite Shape: Rectangular Frame Type: Metal Frame Cone Material: Paper / Mylar Diaphragm depending on variant Speaker Type: Full Range / Dynamic Speaker Mounting: Frame with Screw Slots Application: Compact Audio & Embedded Electronics 🔧 Applications DIY Speaker Projects Portable Audio Devices Bluetooth Speaker Projects Alarm Systems Toys and Sound Modules Intercom Systems Embedded Electronics Educational Electronics Kits Replacement Speaker Repairs Smart Gadgets OEM Product Manufacturing Mini Amplifier Projects 🛠️ Installation Connect the speaker to a compatible amplifier output matching the speaker's 4Ω impedance and 5W power rating. Secure the speaker firmly using the mounting frame to reduce unwanted vibration and noise during operation. 📦 Package Includes 1 × 2-Inch Internal Magnet Speaker with Frame – 4Ω 5W ⚠️ Precautions Match the 4Ω impedance with the amplifier output. Do not exceed the 5W rated power. Avoid applying direct DC voltage to the speaker. Avoid exposure to moisture and excessive humidity. Mount the speaker securely before operation. Do not apply physical pressure to the speaker cone or diaphragm. Avoid short circuits at the speaker terminals. Keep the speaker away from excessive heat and magnetic interference.
Passive Radiator Bass Diaphragm Rubber Speaker Vibration Plate for DIY Speakers
[Passive Radiator] 🔊 Oval, Square & Round Passive Radiator Bass Diaphragm Rubber Speaker Vibration Plate for DIY Speakers Deep Bass Enhancement • Passive Design • No External Power Required • Ideal for DIY Speaker Projects The Rubber Passive Radiator Bass Diaphragm is a high-quality auxiliary bass vibration plate designed to significantly improve the low-frequency response of speaker systems. Available in Oval, Square, and Round shapes with multiple sizes, this passive radiator enhances bass performance without requiring additional power or amplifier channels. Unlike conventional speakers, a passive radiator does not contain a voice coil or magnet. Instead, it utilizes the air pressure generated by the active speaker driver to vibrate, producing deeper, richer bass while minimizing distortion and unwanted cabinet resonance. Manufactured using premium rubber and durable ABS materials, these passive radiators provide excellent flexibility, durability, and long service life. They are ideal for upgrading Bluetooth speakers, portable speakers, multimedia speakers, subwoofers, soundbars, and custom DIY audio projects. Whether you're repairing an existing speaker or building a custom enclosure, these passive bass diaphragms help deliver powerful low-frequency performance while maintaining compact enclosure sizes. ⭐ Features Premium quality rubber passive radiator Available in Oval, Square & Round shapes Produces deep and powerful bass response No power supply or wiring required Improves low-frequency performance Reduces speaker distortion Durable rubber suspension Lightweight and compact design Easy to install Ideal for DIY speaker upgrades and repairs 📋 Technical Specifications Product Type: Passive Radiator Bass Diaphragm Material: Rubber + ABS Plastic+Metal Shape: Oval / Square / Round (Depending on Selected Variant) Available Sizes: Multiple Sizes (2040 to 6090 Series) Operation: Passive (No Voice Coil or Magnet) Power Requirement: None Installation Type: Speaker Cabinet Mount Application: Low Frequency Bass Enhancement Color: Black 🔧 Applications Suitable for: Bluetooth Speakers Portable Speakers DIY Speaker Projects Multimedia Speakers Home Audio Systems Bookshelf Speakers Soundbars Subwoofers Wireless Speakers Audio System Repairs Custom Speaker Cabinets DIY Audio Enclosures 📦 Package Includes 1 × Passive Radiator Bass Diaphragm (Size & Shape as Selected) ⚠️ Note This is a passive radiator only and does not contain a voice coil, magnet, or electrical terminals. Product images are for reference only. The actual product may vary slightly in appearance depending on the selected size, shape, or manufacturing batch.
Black Latching Mini ON/Off Switch Self-Lock Micro Push Button Switch DC 30V 1A for Light Lamp Wall Outlet DIY SMD Flashlight
[Mechanical Switches] The Black Oval Self-Lock Tactile Switch is a compact and durable push button switch designed for low-voltage electronic control applications. It features a self-locking ON/OFF mechanism, allowing the switch to remain in position until pressed again. In addition, the switch uses an SPST (Single Pole Single Throw) configuration for simple and reliable switching operation. As a result, it is suitable for portable electronic devices, LED lighting systems, flashlights, and DIY electronics projects. Because of its compact oval-shaped design, the switch fits easily into small electronic enclosures and space-limited devices. Furthermore, the durable internal mechanism ensures stable operation and long service life. The switch is rated for 1A at 30V DC, making it ideal for battery-powered circuits and low-power applications. Moreover, the tactile push operation provides smooth switching feedback during use. This self-lock tactile switch is commonly used in flashlights, portable devices, DIY electronics, LED control systems, and electronic repair projects. 🔹 Key Features Oval-shaped self-lock tactile switch SPST switching configuration Push ON / Push OFF operation Compact and lightweight design Durable and long-lasting construction Smooth tactile switching response Suitable for low-voltage DC applications Easy installation for DIY projects 🔹 Technical Specifications Product Type: Self-Lock Tactile Switch Switch Shape: Oval Operation Type: Self-Locking Switching Mode: Push ON / Push OFF Contact Configuration: SPST Rated Voltage: 30V DC Rated Current: 1A Switch Dimensions: 12mm × 8mm Plate Length: 8mm Insulation Resistance: 100MΩ Operating Force: 2.55 ± 0.69N Body Material: Plastic + Metal Button Color: Black 🔹 Applications This tactile push switch is suitable for many electronic applications, including: LED flashlights DIY electronics projects Portable electronic devices LED lighting systems Small control circuits Electronic repair projects Battery-powered devices Low-voltage switching systems 🔹 Package Includes 1 × Black Oval Self-Lock Tactile Push Button Switch
Nickel Strip 0.12mm × 5mm 1P Plane Coated Nickel Welding Strip for 18650 Lithium Battery Pack – 1 Meter
[Nickel Strip] The Nickel Strip 0.12mm × 5mm 1P Plane Coated Nickel Welding Strip is specially designed for assembling and repairing 18650 lithium battery packs and other rechargeable battery modules. Made from nickel-coated steel, this strip provides a strong mechanical bond, good electrical conductivity, and excellent weldability. Its flat 1P plane design ensures stable current flow and reliable cell connections. The nickel coating protects against rust and corrosion, making it suitable for long-term use in power banks, e-bike battery packs, solar storage systems, UPS batteries, and DIY lithium battery projects. Supplied in a convenient 1 meter length, this strip is easy to cut, bend, and shape according to your battery pack layout. 🔹 Key Features Made from nickel-coated steel for strength and durability Size: 0.12mm thickness × 5mm width Flat 1P plane strip design Good electrical conductivity and strong weld joints Excellent for spot welding lithium battery cells Corrosion-resistant nickel coating Easy to cut, bend, and form Suitable for 18650, 21700, 26650 lithium cells 🔹 Technical Specifications Material: Nickel-coated steel (Coated Nickel) Thickness: 0.12 mm Width: 5 mm Type: 1P Plane Flat Strip Length: 1 Meter Color: Silver Application: Spot welding for lithium battery packs Compatible Cells: 18650, 21700, 26650 and similar cylindrical cells Conductivity: Good Corrosion Resistance: High (nickel-coated surface) 🔹 Applications 18650 lithium battery pack assembly Power bank manufacturing and repair E-bike and electric vehicle battery packs Solar battery storage systems UPS and inverter battery packs DIY lithium battery projects Battery repair and maintenance 🔹 Package Contents 1 × Coated Nickel Welding Strip (0.12mm × 5mm, Length: 1 Meter)
Nickel Strip 0.12mm × 4mm 1P Plane Coated Nickel Welding Strip for 18650 Lithium Battery Pack – 1 Meter
[Nickel Strip] The Nickel Strip 0.12mm × 4mm 1P Plane Coated Nickel Welding Strip is specially designed for assembling and repairing 18650 lithium battery packs and other rechargeable battery modules. Made from nickel-coated steel, this strip provides a strong mechanical bond, good electrical conductivity, and excellent weldability. Its flat 1P plane design ensures stable current flow and reliable cell connections. The nickel coating protects against rust and corrosion, making it suitable for long-term use in power banks, e-bike battery packs, solar storage systems, UPS batteries, and DIY lithium battery projects. Supplied in a convenient 1 meter length, this strip is easy to cut, bend, and shape according to your battery pack layout. 🔹 Key Features Made from nickel-coated steel for strength and durability Size: 0.12mm thickness × 4mm width Flat 1P plane strip design Good electrical conductivity and strong weld joints Excellent for spot welding lithium battery cells Corrosion-resistant nickel coating Easy to cut, bend, and form Suitable for 18650, 21700, 26650 lithium cells 🔹 Technical Specifications Material: Nickel-coated steel (Coated Nickel) Thickness: 0.12 mm Width: 4 mm Type: 1P Plane Flat Strip Length: 1 Meter Color: Silver Application: Spot welding for lithium battery packs Compatible Cells: 18650, 21700, 26650 and similar cylindrical cells Conductivity: Good Corrosion Resistance: High (nickel-coated surface) 🔹 Applications 18650 lithium battery pack assembly Power bank manufacturing and repair E-bike and electric vehicle battery packs Solar battery storage systems UPS and inverter battery packs DIY lithium battery projects Battery repair and maintenance 🔹 Package Contents 1 × Coated Nickel Welding Strip (0.12mm × 4mm, Length: 1 Meter)
Nickel Strip 0.15mm × 6mm 1P Pure Nickel Welding Strip for 18650 Lithium Battery Pack – 1 Meter
[Nickel Strip] The Nickel Strip 0.15mm × 6mm 1P Pure Nickel Welding Strip is specially manufactured for building and repairing 18650 lithium battery packs and other rechargeable battery assemblies. Made from high-purity nickel, this strip offers low electrical resistance, excellent conductivity, and strong spot-welding performance. Its flat 1P plane design ensures uniform current flow and reliable connections between battery cells. The strip is corrosion-resistant and durable, making it ideal for long-term use in power banks, e-bike battery packs, solar storage systems, UPS batteries, and DIY lithium battery projects. Supplied in a convenient 1 meter length, this strip is easy to cut and shape according to your battery pack design. 🔹 Key Features Made from pure nickel (not nickel-plated steel) Size: 0.15mm thickness × 6mm width Flat 1P plane strip for uniform current flow Excellent conductivity with low internal resistance Strong and reliable for spot welding Corrosion-resistant and long-lasting Easy to cut, bend, and shape Perfect for 18650, 21700, 26650 lithium battery packs 🔹 Technical Specifications Material: Pure Nickel Thickness: 0.15 mm Width: 6 mm Type: 1P Plane Flat Strip Length: 1 Meter Color: Silver Application: Spot welding for lithium battery packs Compatible Cells: 18650, 21700, 26650 and similar cylindrical cells Resistance: Very low (high conductivity) Corrosion Resistance: Excellent 🔹 Applications 18650 lithium battery pack assembly Power bank manufacturing and repair E-bike and electric vehicle battery packs Solar battery storage systems UPS and inverter battery packs DIY lithium battery projects Battery repair and maintenance 🔹 Package Contents 1 × Pure Nickel Welding Strip (0.15mm × 6mm, Length: 1 Meter)
Out of stockWS2812B 144 LEDs/m RGB Addressable LED Pixel Strip Light 5V DC Programmable IP65 Waterproof
[RGB LED Strip] Product Description Illuminate your space with the 144 Addressable WS2812B LED Strip (5V, IP65 Waterproof) — a high-quality, vibrant, and flexible lighting solution designed for both indoor and outdoor applications.This LED strip delivers brilliant RGB colors and individually addressable LEDs, allowing you to create dynamic light effects and custom animations for any occasion. The IP65 waterproof rating ensures reliable performance even in dusty or humid environments, making it ideal for home decor, commercial lighting, events, and DIY projects.Its adhesive backing allows for quick installation on clean surfaces, making it a perfect choice for hobbyists, professionals, and decorators. With 144 LEDs per meter, this strip provides exceptional brightness, flexibility, and color control for artistic displays, mood lighting, or architectural highlights. Key Features 🌈 Addressable Design Each LED is individually controllable, allowing you to produce stunning lighting effects, animations, and color patterns. Perfect for creative lighting projects and synchronized displays. 💧 IP65 Waterproof Protection Built to withstand dust and light water exposure, this LED strip ensures long-lasting durability in both indoor and outdoor environments. 🔆 Vibrant RGB Colors Enjoy rich and vivid RGB color combinations — from bold, dynamic hues to soft ambient tones — to match any mood or theme. 🧩 Easy Installation The flexible strip comes with a strong adhesive backing. Simply peel and stick it to any clean, dry surface for quick setup without tools. ⚙️ Versatile Applications Ideal for home decoration, outdoor landscaping, parties, events, art installations, and signage. Its flexibility makes it suitable for various shapes and surfaces. Specifications Specification Description LED Type WS2812B LED Quantity 144 LEDs per meter Input Voltage 5V DC Waterproof Rating IP65 Control Method Individually Addressable Color RGB (Red, Green, Blue) Strip Length 1 Meter Power Consumption Depends on brightness and color settings Weight 150 g(Approx) Installation Adhesive backing Applications ✨ Enhance your outdoor landscape with vibrant, programmable lighting effects. 💡 Highlight indoor architectural elements or furniture with accent lighting. 🎉 Create dynamic effects for parties, weddings, or events to match the ambiance. 🎮 Upgrade your home theater or gaming setup with immersive backlighting. 🏢 Use in shops or signage displays for eye-catching illumination and visual impact. Package Includes 1 × WS2812B 144 LEDs/m RGB Addressable LED Pixel Strip Light 5V DC Programmable IP65 Waterproof
2 x 32140 / 33140 Battery Holder with 33MM Bore Diameter
[Lithium Battery Holder] 32140 / 33140 x 2 Battery Cell Spacer/Holder is a cylindrical battery spacer, made of flame retardant ABS+PC materials, with high-temperature resistance and crack resistance. There are slots on the edge of the holder, that can be combined into many different sizes and shapes of the battery pack; after welding nickel tabs, the pack can pass the vibration test without any other connecting device. Make your battery pack Solid and Reliable! Note!! Every Single battery cell needs 2 Spacers one up and one down buy it accordingly. Features : There are slots on the edge of the holder to combine them into many different sizes and shapes of the battery pack. Application: Design for Radiating Complex Battery Packs. Safe and Stable, Perfect Build for eBike! Item Type: Battery Holder Model Name 32140 / 33140 radiating battery spacer Material: ABS/PC (Remarkable Flame Retardant Plastic) Bore Diameter [B] (mm) 33MM Application Design for Radiating Complex Battery Packs. Safe and Stable, Perfect Build for eBike Length (mm): 73 Width (mm): 35 Height (mm): 9mm Shipping Weight 0.008 kg Shipping Dimensions 10 × 7 × 1.5 cm Advantages: Very simple to operation Very flexible, it is easy to assemble any type of battery packs Radiating during high rate discharge. Makes your battery pack Solid and Reliable! Package Includes: 1 x 2 x 32140 / 33140 Battery Holder with 33MM Bore Diameter
Single Side Adhesive Barley Insulation Paper 100mm –1 Meter Sheet
[Insulation Paper] Barley Insulation Paper Sheet is an imported, double-layered insulation material, less than 1 mm thick, and ideal for battery packs. Its green, plain shape comes in roll packaging. Made from pure cellulose, it has excellent electrical properties, making it suitable for various appliances, particularly portable lithium-ion batteries. This versatile insulation sheet provides reliable performance and protection for your battery applications. Features: 1. Reduces Heat Transfers 2. Oil Resistance 3. Moisture Absorptions 4. High Elasticity 5. High Mechanical Strength 6. Enriched with Dielectric Properties Applications: 1. Barley Insulation Paper Self-Adhesive Rolls used for Li-ion battery packs & automatic Cell Paper machines. 2. Barley Insulation Paper Stickers on Li-ion Cell Terminals. 3. Used as Gasket Material in Automobile Industries. Package Includes: 1 x Single Side Adhesive Barley Insulation Paper Roll 100mm – 1 meter
2 x 32650/32700 Battery Holder with 32.35MM Bore Diameter
[Lithium Battery Holder] 32650 x 2 Battery Cell Spacer/Holder is a cylindrical battery spacer, made of flame retardant ABS+PC materials, with high-temperature resistance and crack resistance. There are slots on the edge of the holder, that can be combined into many different sizes and shapes of the battery pack; after welding nickel tabs, the pack can pass the vibration test without any other connecting device. Make your battery pack Solid and Reliable! Search Our Others Products: Click Here Note!! Every Single battery cell needs 2 Spacer for one up and one down buy it accordingly. Features : There are slots on the edge of the holder to combine them into many different sizes and shapes of the battery pack. Application: Design for Radiating Complex Battery Packs. Safe and Stable, Perfect Build for eBike! Advantages: Very simple to operation Very flexible, it is easy to assemble any type of battery packs Radiating during high rate discharge. Makes your battery pack Solid and Reliable! Package Includes: 1 X 2 x 32650/32700 Battery Holder with 32.35MM Bore Diameter
8mm White Color LED – Diamond Shape LED
[LEDs] A standard 8mm White Color Diamond Shape that can be used for indication or visualization purposes. It can be used on breadboard, dot board and PCB. You can also use LED mount to fix them onto casings or enclosures. The longer lead is the positive and the shorter lead is the negative. Specifications: Lighting Color: White Voltage: 3V Size/Dimension: 8mm Lens Type: Clear 8mm LED Applications: Used as indicators in products and designs Toys & Games Lighting Products Electronic projects Package Includes: 1 PC of 8mm White Color LED – Diamond Shape LED
1S 2A 18650 (NMC) Lithium Battery BMS Round Shape With Nickel Strip
[Lithium Battery Protection Board] JLGW BMS NMC 1S 2A ROUND Hardware Product Data Sheet The BMS NMC 1S 2A ROUND (JLGW) is a high-precision, compact Battery Management System specially designed for single-cell NMC (Li-ion 3.7V) battery protection. This module is uniquely built in a round PCB layout, allowing it to seamlessly integrate into compact cylindrical battery designs or battery packs with limited space. Technical Specifications Parameter Specification Configuration 1S (Single 3.7V Li-ion Cell) Battery Chemistry NMC / Li-ion Nominal Voltage 3.7V Continuous Current 2A Overcharge Protection 4.25V ± 0.05V Over-discharge Protection 2.75V ± 0.05V Short Circuit Protection Yes (Instant cut-off) Overcurrent Protection Yes (~3A threshold) Working Temperature Range -20°C to +60°C PCB Shape & Size Round mini-PCBA with dual nickel strips Mounting Style Spot-Weld Tabs Key Features Space-Saving Round Design: Engineered for cylindrical cells and compact builds. Intelligent Safety Circuitry: Built-in MOSFETs and ICs protect against all common faults. 2A Output: Suited for low-drain applications like wearables and IoT gadgets. Nickel Strips Included: Pre-attached nickel makes welding and integration seamless. Single Cell Protection: Manages charge-discharge cycles efficiently for 1S packs. Ideal Applications LED Flashlights Cylindrical Battery Packs DIY Battery Projects Bluetooth Audio Devices Small IoT Systems Mini Power Banks The PCM NMC 01S/2A ROUND is a Battery Protection Circuit Module (PCM) designed for 1 series Nickel Manganese Cobalt (NMC) battery packs, supporting a 2A continuous discharge current. This module is suitable for low-power applications such as small energy storage systems, backup power solutions, and portable devices. The round designation indicates that the PCM is designed for round-cell configurations, which are commonly used in battery packs for various consumer electronics. It offers essential protection features, including overcharge, over-discharge, overcurrent, short circuit, and temperature protection, ensuring the safe and reliable operation of the battery. The PCM helps maintain the health of the cells by balancing the voltage across them, optimizing performance and extending the battery's lifespan. Package Includes: 1 x 1S 2A 18650 (NMC) Lithium Battery BMS Round Shape With Nickel Strip
Rubber Passive Radiator Bass Vibration Plates
[Passive Radiator] The Oval Shape Passive Radiator Bass Diaphragm Rubber Speaker Plate is designed to enhance the low-frequency bass response of speaker systems without requiring additional power. Made from high-quality flexible rubber, this passive radiator works by using the air pressure generated inside the speaker enclosure to produce deep and powerful bass vibrations. Passive radiators act as an alternative to traditional bass reflex ports. Instead of allowing air to escape through a port, the radiator diaphragm vibrates in response to internal air pressure from the active driver, resulting in stronger bass performance, reduced distortion, and improved overall sound quality. These DIY speaker passive radiators are ideal for portable speakers, Bluetooth speakers, subwoofers, home audio systems, and custom speaker enclosures. Their lightweight yet durable construction ensures long-lasting operation and easy installation in a wide variety of audio projects. Available in sizes 4080, these passive radiators allow builders and audio enthusiasts to choose the right size for their speaker design and enclosure. Perfect for DIY speaker upgrades, custom audio builds, and professional speaker system enhancements, this rubber bass vibration plate delivers powerful bass performance without increasing power consumption. ⭐ Key Features Durable Rubber Construction for long-lasting use Enhances Bass Performance and low-frequency response Passive Operation – No Power Required Improves Sound Clarity and reduces distortion Lightweight and Compact Design Available in Sizes 4080 Ideal for DIY speaker projects and audio upgrades Easy to integrate into speaker enclosures 🔧 Technical Specifications Product Type: Passive Radiator / Bass Diaphragm Plate Shape: Oval Material: High-quality Rubber Function: Passive Bass Radiator Operation: Air-pressure driven vibration Available Sizes: 4080variants Installation Type: Speaker enclosure mounting Application: Audio speakers & subwoofer systems 🎯 Applications DIY speaker projects Portable Bluetooth speakers Home theater systems Subwoofer speaker boxes Custom speaker cabinets Audio system upgrades 📦 Package Includes 1 × Oval Shape Passive Radiator Bass Diaphragm Plate
1260110 3.7V 10000mAh Lipo (Lithium Polymer) Rechargeable Battery
[LiPo Cell] 3.7V 10000mAh Lithium Polymer (Li-Po) Rechargeable Battery – Model 1260110 Being a Lithium Polymer (Li-Po) rechargeable battery, this is a high-capacity, lightweight battery designed for applications where compact size, high energy density and good capacity-to-weight ratio are important. This 3.7V 10000mAh Li-Po battery uses a solid polymer electrolyte and is suitable for DIY and commercial applications such as power banks, GPS devices, MP3 players, FM radios, Bluetooth speakers, IoT devices and other portable electronics. This battery is Model 1260110, Grade A quality, certified and designed for high-performance rechargeable applications. ⭐ Key Features High-capacity 10000mAh rechargeable Li-Po battery 3.7V nominal voltage Maximum charging voltage 4.2V Lightweight and sleek design High specific energy and energy density Excellent capacity-to-weight ratio Flexible form factor Compact size for portable applications Grade A quality rechargeable cell Suitable for DIY and commercial applications Useful for portable electronics and battery-powered projects 📋 Technical Specifications Model Number: 1260110 Battery Type: Lithium Polymer (Li-Po) Type: Rechargeable Battery Nominal Voltage: 3.7V Maximum Charge Voltage: 4.2V Capacity: 9200mAh(Approx) Battery Chemistry: Lithium Polymer Size: 110 × 60 × 12mm Quality: Grade A Form Factor: pouch cell 🔋 Battery Characteristics Lithium Polymer batteries are known for their lightweight construction, high energy density and flexible form factor. The pouch-style construction allows the battery to be designed in various shapes and sizes, making it suitable for compact electronic devices where space and weight are important considerations. 🔧 Applications 1. Portable Power Banks External battery packs Smartphone and tablet charging systems USB-powered portable devices 2. Medical Devices Portable medical equipment Portable monitors Battery-powered medical devices 3. IoT Devices Wireless sensors Compact IoT devices Low-power wireless electronics 4. Uninterruptible Power Supplies (UPS) Small-scale portable UPS systems Backup power applications 5. DIY Electronics DIY power banks Bluetooth speakers Portable audio projects GPS projects MP3 players FM radios Custom rechargeable battery packs 🛠️ Charging & Usage Use a charger specifically designed for single-cell 3.7V Li-Po/Li-Ion batteries. The maximum charging voltage is 4.2V. Do not connect the battery directly to a 5V supply. Use an appropriate charging/protection circuit for safe operation. Avoid short-circuiting, puncturing, crushing or physically damaging the pouch cell. 📦 Package Includes 1 × 3.7V 10000mAh Lithium Polymer Rechargeable Battery Model: 1260110 ⚠️ Safety Precautions Do not overcharge or over-discharge the battery. Do not short-circuit the battery terminals. Do not puncture, bend excessively, crush or open the battery. Keep away from excessive heat, fire and direct flame. Use a suitable Li-Po charging module with appropriate protection. Inspect the battery before use; do not use if swollen, damaged or leaking. Store in a cool and dry place when not in use. Keep away from children and pets.
T Handle Connector for SB50 Anderson Connector – Grey
[Power Connector] T-Handle for SB50 Anderson Connector The T-Handle for SB50 Anderson Connector is a durable and convenient accessory designed to make connecting and disconnecting SB50-style 2-pole power connectors easier. Its ergonomic T-shaped design provides a firm grip and improved leverage, allowing the connector to be removed smoothly without pulling directly on the cables. ⭐ Key Features Designed for SB50 Anderson-style connectors Ergonomic T-shaped handle Provides a firm and comfortable grip Makes connector removal easier Helps reduce strain on connector cables Easy bolt-on installation Durable construction Suitable for frequent connector connection/disconnection 📋 Technical Specifications Product Type: Anderson Connector T-Handle Compatible Connector: SB50 Connector Type: 2-Pole Rated Current: Up to 50A for SB50 Handle Type: T-Shape Pull Handle Color: Grey Mounting: Bolt-On Application: Connector Insert & Pull 🔧 Applications Battery Packs Solar Power Systems Inverters UPS Systems Electric Vehicles Golf Carts Electric Scooters Trailers Caravan & RV Systems Automotive Power Connections DIY Battery Projects 📦 Package Includes 1 × T-Handle for SB50 Anderson Connector Mounting Bolts Nuts
Out of stock2 inch 15 Watt 3-4 Ohm Speaker 53mm Diameter good Quality
[Speakers] Description This is a general-purpose 3-4 Ohm 15 Watt Speaker that can be used for a variety of audio projects. It has a balanced frequency response and is extremely efficient. Excellent high-frequency response. It is a type of transducer that converts electromagnetic energy into sound waves. It converts analog signal inputs from computers or audio players into sound waves. Because of its small size, it can be used in a variety of applications where space is limited. It can be used in Doorbells, Bluetooth speakers, music systems, Alarms and various other projects. Specifications Impedance 3-4 ohms Power 15 Watt Speaker Dimension 53mm*53mm Thickness 29.4mm Magnet Diameter 44.0mm Shape Top Round, Square Frame Material Metal, Magnet & Plastic Color Black & Silver Magnet Type External Quantity 1 Pieces Country of Origin China
3.7V 500mAh 14500 Lithium-Ion Battery without Tip Top Cap
[Lithium Battery Cell] Product Description The 3.7V 500mAh 14500 Lithium-Ion Rechargeable Battery (AA Size) is a compact and powerful energy source designed for high-performance portable devices. With a flat-top terminal and 500mAh capacity, this Li-ion cell provides reliable, long-lasting power for your electronics and DIY projects. Ideal for use in RC transmitters, receivers, flashlights, toys, and DIY electronic projects, it offers excellent efficiency and rechargeability compared to standard AA batteries. Its cylindrical design ensures compatibility with most 14500 battery holders or can be soldered directly into circuits. Features Voltage: 3.7V Capacity: 500mAh Battery Type: Lithium-Ion (Li-ion) Shape: Cylindrical (AA Size – 14500) Terminal Type: Flat Top High performance and long cycle life Lightweight and compact design Compatible with most 14500 battery holders Environment-friendly and rechargeable Applications RC transmitters and receivers Flashlights and LED torches Hobby electronics and DIY projects Battery-powered toys and gadgets Power banks and small embedded systems Package Includes 1 × 3.7V 500mAh 14500 Lithium-Ion Rechargeable Battery (Flat Top, without Tip Cap)
Out of stock3.7V-4V Capsule Shape COB LED Light Cool White
[COB LED] This Chip on Board COB Led Light is very small and innovative product, it comes in many different Shapes and Sizes. Its mostly used where the thickness of the product is very important consideration. These led comes with aluminum metal back which act as heat dissipating area for the Led,as these led got hot while running. Application: Car lights House lighting Work lamps Decor lights Specifications: Input Voltage 3.7V-4V Max Input Voltage 4V (More than 4V Voltage will completely damage the product) Light Type COB LED Material Aluminum & Silicone rubber Color Cool White Thickness 2mm Plate Dimensions (L x B x H) 74 x 22 x 2mm Dimensions of Led Area (L x B x H) 60 x 17 x 1mm Weight 2gm Package Includes: 1 x 3.7V-4V Capsule Shape COB LED Light Cool White.
Out of stock32700 32650 3.2V Rechargeable 6000mAh LifePO4 Battery Cell for EV
[LiFePO4 Battery Cell] 32700 32650 3.2 V 6000 MAH LiFePO4 Battery This Standard 32700 32650 3.2 V Rechargeable 6000mAh LifePO4 Battery Cell is a single cell powerful battery cell with a massive 6000 mAh capacity. This LifePO4 battery is very convenient to install in your project where 3.2 Volt with high capacity is needed. The Standard 6000mAh 3.2V Rechargeable LifePO4 Battery is a source of power for various portable devices including flashlights, hobby transmitters, and receivers, etc. This Battery can be the best Replacement to the normal Non-Rechargeable AA Battery used in many applications such as in RC Transmitter/Reciever Remote, which can make your flight driving experience very cost-effective and efficient in terms of power output than that of conventional AA batteries. IMPORTANT: Never completely discharge the LifePO4 battery ( below 2.5V under load ). Charge fully to 4.2V before first use. Never attach any metal moving part like a magnet to the battery contact. Never use force to install (insert) LifePO4 battery. Do not use old and new battery cells together. Use only a high-quality battery charger. Do not expose to heat. Do not short (connect) positive (top), and negative (bottom) battery terminals (contacts). Keep battery that is not in use in the plastic holder (or any insulating [plastic] container). Do not charge the battery over 4.22V (another reason to use a high-quality battery charger). Don’t charge unattended. Do not store your LifePO4 batteries fully charged (for an extended period of time). Store in a cold and dry place at approximately 3.7V (storage charge). After the battery is discharged-don’t leave it discharged, charge it as soon as possible. FEATURES: Shape: Cylindrical Battery Battery Type: Lithium-Ion Rechargeable Battery High performance and capacity Flat top to suit many devices fitting PACKAGE INCLUDES: 1 x 32700 or 32650 3.2 V Rechargeable 6000mAh LifePO4 Battery Cell for EV. Note: Color and Print on the Cells may vary with every lot. We ship it randomly
Out of stockHongli 18650 3.7V 3000mAh Lithium-Ion Rechargeable Cell
[Lithium Battery Cell] HONGLI Lithium-ion 18650 3.7V 3000mAh Battery Cell This Li-Ion 18650 3.7V 3000MAH Battery gives value for your money. It is a single cell, compact, and powerful battery cell with 3000 mAh capacity(Not actual capacity). It is very convenient to install in your project to fulfill a 3.7 Volt requirement with high capacity. The battery terminals can use in any compatible battery adapter/holder or it can be permanently soldered to your application’s power source wires. This is copy cells capacity may be different. Important: Never completely discharge the Li-ion battery ( below 2.5V under load ). Charge fully to 4.2V before first use. Never attach any metal moving part |magnet| to the top-positive or the bottom-negative battery contact. Never use force to install (insert) Li-ion battery. Do not use old and new battery cells together. Use only a high-quality battery charger. Do not expose to heat. Do not short (connect) positive (top), and negative (bottom) battery terminals (contacts). Keep battery that is not in use in the plastic holder (or any insulating [plastic] container). Do not charge a battery over 4.22V (another reason to use a high-quality battery charger). Don’t charge unattended. Do not store your li-ion batteries fully charged (for an extended period of time). Store in cold and dry place at approximately 3.7V (storage charge). After the battery is discharged-don’t leave it discharged=>charge it as soon as possible Features/Specs: Manufacturer: HONGLI SUPPLY SOURCE TECHNOLOGY Battery Type: Lithium-Ion Battery Battery Model: 18650 Battery Voltage: 3.7V Full Charging voltage: 4.20V Battery Capacity: 3000 mAh Rechargeable: Yes PCB Protected Board: No Shape: Cylindrical Battery Dimensions in: mm Dia: 18mm Length: 65mm Weight: 39gm Application: Portable equipment: POS, Portable printer, handset. Medical instrument: B ultrasound, Ecg monitoring instrument Military equipment: IR telescope Consumer electronics:PDA,MID,laptop,emergency light power source power tool e-bicycle Industrial and commercial instrument: light power meter, Gas testing instruments, fusion splicer, flaw detector Electric toy:RC car/ boat/helicopter Package Includes: 1 x HONGLI Lithium-ion 18650 3.7V 3000mAh Battery Cell Note: Product Images are shown for illustrative purposes only and may differ from the actual product.