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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
JBD 3-4S/100A Smart BMS For LiFePO4 (LFP) batteries
[Lithium Battery Protection Board] JBD Smart BMS 3-4S 100A (DP04S014) Charge and discharge are both at the same port Product Data Sheet Cell specifications: 3~4 strings of LiFePO4 battery Continuous current: 100A Balance detect Voltage 3.8 Interface type: Charge and discharge are both at the same port Charging voltage: 3.6V*Number of strings Cell voltage range: 2.30~3.75V Continuous charging current: 100A Continuous discharging current: 100A The JBD SMART BMS 100A DP04S014 (3-4S) is a compact and powerful Battery Management System designed for lithium-ion and LiFePO4 battery packs with 3 to 4 series cells. It supports a continuous discharge current of 100A, making it suitable for high-power applications such as electric vehicles, portable power systems, and energy storage solutions. This BMS provides essential protection features including overcharge, over-discharge, overcurrent, short circuit, and temperature management to ensure safe and reliable battery operation. With active cell balancing, it maintains voltage consistency across cells. It also supports UART, RS485, and CANBUS communication, along with Bluetooth for real-time monitoring and diagnostics, offering flexibility and control over battery performance. Package Includes: 1 x JBD 3-4S/100A Smart BMS For LiFePO4 (LFP) batteries 1 x 5 Pin Connector
NEEY Active Balancer 24S 2A Lithium Battery Active Equalizer
[Lithium Battery Protection Board] NEEY Active Balancer 24S 2A – 24S Lithium Battery Active Equalizer The NEEY Active Balancer 24S 2A is an advanced battery active balancing module designed to improve cell voltage consistency and overall battery pack performance. It transfers energy between individual cells to help maintain a more balanced battery pack, reducing cell voltage differences and improving usable capacity, battery life, and overall system stability. With support for a wide 1.8V–4.5V cell voltage range, this active balancer is suitable for various lithium battery chemistries including LiFePO₄, Lithium-ion, and LTO battery packs. It is particularly suitable for high-capacity battery systems used in electric vehicles, e-rickshaws, e-bikes, solar energy storage, and other battery applications. The product specification identifies this model as a 24S Active Balancer with 2A balancing current, making it suitable for battery packs with up to 24 cells connected in series. ⭐ Key Features 24S Active Battery Balancer 2A balance current as specified for this model Active energy transfer between cells Supports cell voltage from 1.8V to 4.5V Compatible with LiFePO₄, Lithium-ion & LTO batteries High voltage measurement accuracy of approximately ±5mV Helps reduce cell voltage imbalance Improves battery pack performance and usable capacity Helps extend battery pack service life Low power consumption Suitable for high-capacity battery packs Ideal for EV, solar, and battery storage applications 📋 Technical Specifications Product Type: Active Battery Balancer Model: NEEY Active Balancer 24S 2A Item Code: 26001527 Category: Active Balancer Unit of Measure: PCS Series Support: Up to 24S Balance Current: 2A Cell Voltage Range: 1.8V–4.5V Voltage Accuracy: ±5mV Sleep Current: <0.1mA Working Current: Approx. 12mA Battery Chemistry: LiFePO₄, Lithium-ion, LTO Balancing Type: Active Energy Transfer 🔧 Applications LiFePO₄ Battery Packs Lithium-Ion Battery Packs LTO Battery Packs E-Rickshaw Batteries E-Bike Batteries Electric Vehicle Battery Packs Solar Inverter Battery Systems Energy Storage Systems High-Capacity Battery Packs 30Ah–300Ah Battery Applications DIY Battery Projects Battery Pack Maintenance & Optimization ⚡ Benefits of Active Balancing Active balancing transfers energy from higher-voltage cells to lower-voltage cells instead of simply dissipating excess energy as heat. This helps maintain better cell voltage balance and can improve the usable capacity and consistency of a multi-cell battery pack. 📦 Package Includes 1 × NEEY Active Balancer 24S 2A ⚠️ Important Note The supplied product information mentions 0–5.5A active balancing technology as a key feature, while the specific technical specification for this product lists the balance current as 2A. For this listing, the model-specific specification of 2A balance current should be used.
Digital Multi Servo Tester ESC RC Consistency CCPM Master Speed Control
[Servo Motor] Digital Multi Servo Tester ESC RC Consistency CCPM Master Speed Control offers 3 modes to check servos or ESC. The Manual Mode allows you to turn the knob to different speeds and check the reaction time. The Neutral mode makes the servo go back to the neutral point. The Automatic ’’Window Wiper’’ Mode makes the servo swing like a window wiper in the largest angle possible. Plus, this servo tester can connect to up to 3 servos simultaneously. You can also connect up to 3 ESCs to test and compare their reaction time respectively. Click and order now! Operation Modes :- Automatic mode:- Operates servos to their end point and back “window wiper” mode: Make the servo swing like window wipers in the biggest angle Manual mode:- Turn the knob with different speed, check the reaction time Neutral / Center mode:- Centers servos to their neutral position Ideal for when setting servos up in a model Features of Digital Multi Servo Tester ESC RC Consistency CCPM Master Speed Control :- Digital Multi Servo Tester ESC RC Consistency CCPM Master Speed Control Operating Voltage: DC 4.8-6V Offer 3 modes to check servos or ESC The Manual Mode allows you to turn the knob to different speeds and check the reaction time The Neutral mode makes the servo go back to the neutral point The Automatic ’’Window Wiper’’ Mode makes the servo swing like a window wiper in the largest angle possible Connect to up to 3 servos simultaneously Connect up to 3 ESCs to test and compare their reaction time respectively Built with LED indicators Output signal: 1.5ms±0.5ms Size: 36.5 x 31.0 x 22mm
Out of stockOSELTECH 3800 MAH RECHARGEABLE BATTERY ( PACK OF 2 PCS)
[Lithium Battery Cell] 3800 mAh 18650 3.7V Lithium-Ion Battery 18650 Li-ion battery is a lithium-ion rechargeable battery and is used in high drain applications due to its superior capacity and discharge rate. The first 4 digits of 18650 indicate its dimension, i.e. 18mmx65mm, and the last 5th digit indicates its shape, i.e. cylindrical. Li-ion batteries can usually boost a 300-500 charge cycle. Features : High energy density High working voltage for single battery cells. Pollution-free Long cycle life No memory effect Capacity, resistance, Voltage, platform time consistency is good. Good consistency and low self-discharge. Lightweight, small size Shape: Cylindrical Battery Battery Type: Lithium-Ion Battery High performance and capacity Flat top to suit many devices fitting. Weight 85gms Package Includes : 2 x Lithium-Ion 18650 Rechargeable Cell 3.7V 3800mAh
WS2812B 1M 60LED DC 5V Addressable LED Strip Roll Non Waterproof 1 Meter
[RGB LED Strip] ✨ WS2812B 60 LED/m Addressable LED Strip (1 Meter, 5V) – High Brightness, DIY RGB Lighting Upgrade your lighting projects with the WS2812B 60 LED/m Addressable RGB LED Strip — the most popular choice for creators, hobbyists, and professionals. Designed with individually addressable RGB LEDs, this 1-meter strip lets you create stunning animation effects, rainbow patterns, breathing lights, chases, waves, and more using any compatible microcontroller. Powered by a stable 5V input, this LED strip delivers bright, vibrant colors with seamless gradients and superior consistency. Perfect for Arduino, ESP32, Raspberry Pi, PC mods, gaming setups, TV backlights, decorative lighting, DIY electronics, and smart home projects. ⭐ Key Features Individually Addressable LEDs (WS2812B IC)Each of the 60 LEDs per meter can be controlled separately for advanced lighting effects. High Brightness & True RGB ColorsProduces vivid and smooth color transitions with 256-level brightness control. Easy 5V Power InputWorks with USB, power banks, Arduino 5V output, and 5V adapters. Flexible & Cuttable StripCut between every LED and solder easily for custom length. Compatible With Popular PlatformsWorks with Arduino, ESP8266, ESP32, Raspberry Pi, FastLED, WLED, NeoPixel libraries. Non-Waterproof (Indoor Use)Ideal for desks, PCs, shelves, room décor, and electronic builds. 🔧 Technical Specifications Model: WS2812B Addressable RGB LED Strip Length: 1 Meter LED Density: 60 LEDs per meter Voltage: DC 5V Power Consumption: ~18W per meter (full white) Control Signal: Single-wire digital (Din) Type: Non-Waterproof LED Package: 5050 RGB Beam Angle: 120° 🎯 Ideal Applications DIY RGB lighting projects Gaming room & PC case mods TV/monitor ambient backlight Arduino & ESP projects Festivals, decoration & ambient lighting Robotics & wearables Smart home LED animations
Out of stockBAK NMC 18650 2600mAh (3c) Lithium-Ion 3.6V Battery A+ Grade
[Lithium Battery Cell] The BAK Cylindrical Lithium-ion 18650 Cell is a high-performance, rechargeable lithium-ion battery with a 2600mAh capacity and a 3.65V nominal voltage. Designed for high energy density, long cycle life, and stable performance, this cell is ideal for portable electronics, power tools, electric vehicles (EVs), energy storage systems, and custom battery packs. You can check our others lithium cells click here. Features: High energy density High working voltage for single battery cells. Pollution-free Long cycle life No memory effect Capacity, resistance, Voltage, and platform time consistency is good. Good consistency and low self-discharge. Lightweight, small size Shape: Cylindrical Battery Battery Type: Lithium-Ion Battery High performance and capacity Flat top to suit many devices fitting. Specifications: Model: NMC 18650 Cell Type: (3C) Watt-hours: 9.36Wh Nominal capacity: 2600mAh by standard charge and discharge 2600mAh Minimum capacity: 2500mAh by standard charge and discharge 2500mAh Nominal voltage: 3.60 V Charge cut-off voltage: 4.20 V Discharge cut-off voltage: 2.75 V Max charge current: 1C (25℃,not for cycle life ) Max discharge current: 3C (25℃,not for cycle life ) Internal resistance: ≤30 mΩ(AC Impedance, 1000 Hz) Weight: ≤ 48g Packages Includes: 1 x BAK NMC 18650 2600mAh (3c) Lithium-Ion 3.6V Battery
Out of stockBAK NMC 18650 2900mAh (3c) Lithium-Ion Battery
[Lithium Battery Cell] Features: High energy density High working voltage for single battery cells. Pollution-free Long cycle life No memory effect Capacity, resistance, Voltage, platform time consistency is good. Good consistency and low self-discharge. Lightweight, small size Shape: Cylindrical Battery Battery Type: Lithium-Ion Battery High performance and capacity Flat top to suit many devices fitting. Specifications: Product: Lithium-Ion Battery Model: NMC 18650 Watt-hours: 10.44Wh Nominal capacity: 2900mAh by standard charge and discharge 2900mAh Minimum capacity: 2800mAh by standard charge and discharge 2800mAh Nominal voltage: 3.6 V Charge cut-off voltage: 4.2 V Discharge cut-off voltage: 2.5 V Max charge current: 1C (25℃,not for cycle life ) Max discharge current: 3C (25℃,not for cycle life ) Humidity range: 0 ~ 60% RH (Non-condensing) Weight: 48g Packages Includes: 1 x BAK NMC 18650 2900mAh (3c) Lithium-Ion 3.6V Battery
100 RPM Dual Shaft BO Motor-Straight
[Gear Motor] The 100 RPM Dual Shaft BO Motor Plastic Gear Motor – BO series straight motor gives good torque and rpm at lower operating voltages, which is the biggest advantage of these motors. Small shaft with matching wheels gives an optimized design for your application or robot. Mounting holes on the body & light weight makes it suitable for in-circuit placement. This motor can be used with 69mm Diameter Wheel for Plastic Gear Motors and 87mm Diameter Multipurpose Wheel for Plastic Gear Motors. Low-cost geared DC Motor. It is an alternative to our metal gear DC motors. It comes with an operating voltage of 3-12V and is perfect for building small and medium robots. Available with 60 and 150 RPM. The motor is ideal for DIY enthusiasts. This motor set is inexpensive, small, easy to install, and ideally suited for use in a mobile robot car. They are commonly used in our 2WD platforms. We are supplying the range BO(Battery Operated) Motors with varying RPM and Gear-Box arrangement, click on the name below for more information Features : Low density: lightweight, low inertia. Capability to absorb shock and vibration as a result of elastic compliance. Ability to operate with minimum or no lubrication, due to inherent lubricity. The relatively low coefficient of friction. Operating Voltage(VDC): 3~12 Shaft Length (mm): 8.5 Shaft Diameter (mm): 5.5 (Double D-type) No Load Current: 40-180mA. Rated Speed(After Reduction): 100 RPM Rated Torque: 0.35 Kg cm Cost-effectiveness of the injection-molding process. Elimination of machining operations. Low density: lightweight, low inertia. Uniformity of parts. Capability to absorb shock and vibration as a result of elastic compliance. Ability to operate with minimum or no lubrication, due to inherent lubricity. The relatively low coefficient of friction. Corrosion-resistance; elimination of plating, or protective coatings. The quietness of operation. Tolerances often less critical than for metal gears, due in part to their greater resilience. Consistency with the trend to greater use of plastic housings and other components. SPECIFICATIONS : Operating Voltage (VDC) 3 ~ 12 Shaft Length (mm) 8.5 Shaft Diameter (mm) (Double D-type) 5.5 No Load Current (mA) 40-180mA. Rated Speed After Reduction (RPM) 100 Rated Torque (Kg-Cm) 0.35 Weight (gm) 30 Dimensions in mm (LxWxH) 70 x 23 x 19 Gearbox Shape Straight Shipment Weight 0.033 kg Shipment Dimensions 8 × 4 × 4 cm Package Includes : 1 x 100 RPM Dual Shaft BO Motor – Straight
18650 3.7V 1200mAh Lithium-Ion Rechargeable Cell
[Lithium Battery Cell] Good Quality 1200 mAh ICR18650 3.7V Lithium-Ion Battery 18650 Li-ion battery is a lithium-ion rechargeable battery and is used in high drain applications due to its superior capacity and discharge rate. The first 4 digits of 18650 indicate its dimension, i.e. 18mmx65mm, and the last 5th digit indicates its shape, i.e. cylindrical. Li-ion batteries can usually boost a 300-500 charge cycle. You can check our others lithium cells click here. Features : High energy density High working voltage for single battery cells. Pollution-free Long cycle life No memory effect Capacity, resistance, Voltage, platform time consistency is good. Good consistency and low self-discharge. Lightweight, small size Shape: Cylindrical Battery Battery Type: Lithium-Ion Battery High performance and capacity Flat top to suit many devices fitting. Weight 60gms. Applications: Electric Scooter Electric Bicycle E-Skate Board Electric Motorcycle E-Wheel Chair Electric Tool Drone Electric Vehicle Etc. Power Bank Package Includes : 1 x Lithium-Ion 18650 Rechargeable Cell 3.7V 1200mAh Note: Images shown are for illustrative purposes only. Actual Product may vary.
18650 3.7V 2200mAh Lithium-Ion Rechargeable Cell
[Lithium Battery Cell] Good Quality ICR18650 3.7V 2200mAh Li-Ion Rechargeable Battery Cell The ICR18650 3.7V 2200mAh Lithium-Ion Rechargeable Battery Cell is a cylindrical rechargeable battery designed for a wide range of portable electronics and DIY battery-pack applications. With a nominal voltage of 3.7V and a capacity of 2200mAh, it is suitable for battery packs, power banks, portable lighting, electronics projects and other compatible devices. Cell colour and printing may vary from the images shown. The cell will be shipped randomly according to available stock. ⭐ Key Features Nominal voltage: 3.7V Capacity: 2200mAh Rechargeable lithium-ion cell 18650 cylindrical form factor Flat-top terminal High energy density High working voltage Long cycle life No memory effect Low self-discharge Good capacity and voltage consistency Lightweight and compact Suitable for single-cell and multi-cell battery packs Cell colour and printing may vary depending on stock 📋 Technical Specifications Battery Type: Lithium-Ion (Li-Ion) Model/Format: ICR18650 Cell Size: 18650 Nominal Voltage: 3.7V Capacity: 2200mAh Cell Shape: Cylindrical Terminal Type: Flat Top Rechargeable: Yes Nominal Energy: Approximately 8.14Wh Memory Effect: No Typical Cycle Life: Approximately 300–500 cycles Colour: May vary Printing/Brand: May vary Dimensions: 18 × 65mm nominal 18650 format 🔋 Battery Configuration Examples 1S: 3.7V nominal / 4.2V fully charged 2S: 7.4V nominal / 8.4V fully charged 3S: 11.1V nominal / 12.6V fully charged 4S: 14.8V nominal / 16.8V fully charged For multi-cell battery packs, use properly matched cells and an appropriate BMS/protection circuit and charger. 🎯 Applications Electric scooters Electric bicycles E-skateboards Electric motorcycles Electric wheelchairs Power tools Drones Electric vehicles Power banks Portable electronics DIY lithium battery packs Emergency/backup power projects LED lighting projects ⚠️ Important Safety Notes Do not short-circuit the battery. Do not charge above 4.2V. Use a suitable Li-ion charger designed for a single 3.7V cell. Do not reverse the polarity. Do not puncture, crush, disassemble or physically damage the cell. Keep away from excessive heat, fire and moisture. Do not mix old and new cells or cells with significantly different capacities/voltages. For battery packs, use cells with matching characteristics and an appropriate BMS. The actual discharge capability should be verified for the specific cell batch before using it in high-drain applications such as power tools or electric vehicles. Cell colour and printing may be different from the images shown. Products are shipped randomly according to available stock. Images are for illustrative purposes only. Actual product may vary. 📦 Package Includes 1 × ICR18650 Lithium-Ion Rechargeable Battery Cell – 3.7V 2200mAh