All products · 4 of 1440
Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.

Type-C USB Input High Current 3A Polymer Ternary Lithium Battery Quick Fast Charging Board IP2312 CC/CV Mode 5V To 4.2V
[Lithium Battery Protection Board] Power your projects with the Type-C USB Input 3A Lithium Battery Fast Charging Board (IP2312) — a compact, high-efficiency charging solution designed for 3.7V lithium-ion and lithium polymer batteries. Built around the advanced IP2312 main control chip, this module delivers fast, stable, and intelligent charging using a full CC/CV (Constant Current / Constant Voltage) charging algorithm. It ensures optimal battery health, safety, and performance while supporting high current charging up to 3A, making it ideal for modern DIY electronics and portable power applications. The Type-C input interface provides universal compatibility with standard 5V USB power sources, while onboard indicator LEDs clearly display charging status. ⚠️ Note: Not suitable for 3.2V LiFePO4 (Lithium Iron Phosphate) batteries Key Features ⚡ High Current Fast Charging (Up to 3A)Supports rapid charging for lithium-ion/polymer batteries, reducing charging time significantly. 🔋 Advanced CC/CV Charging TechnologyEnsures safe and efficient charging with automatic switching between charging stages. 🔌 Type-C USB InputModern and widely compatible input interface (4.5V–5.5V), easy to power from adapters, power banks, or USB ports. 🧠 Smart Charging Management (IP2312 Chip)Automatically adjusts charging mode based on battery voltage for maximum safety and efficiency. 🔴🔵 LED Status Indicators Red LED: Charging in progress Blue LED: Fully charged 🛠️ Compact & Easy IntegrationSmall size makes it perfect for embedded systems, DIY battery packs, and portable devices. Charging Working Principle 🔹 Trickle Charging Mode (< 3V)When battery voltage is below 3V, the module charges with a safe low current (~100mA). 🔹 Constant Current Mode (> 3V)Once voltage exceeds 3V, it switches to constant current charging (up to 3A). 🔹 Constant Voltage Mode (~4.2V)As the battery approaches full charge, it maintains voltage while gradually reducing current. 🔹 Auto Cut-Off & Recharge Charging stops when current drops below 300mA Automatically resumes charging if voltage drops below 4.1V Specifications Specification Description Main Chip IP2312 Charging Mode CC/CV (Constant Current / Voltage) Input Voltage 4.5V – 5.5V (Type-C USB) Charging Current Up to 3A Battery Type 3.7V Li-ion / Li-Po Cut-off Voltage 4.2V / 4.35V Indicator LEDs Red (Charging), Blue (Full) Dimensions 34.5mm × 15mm Applications 🔋 DIY lithium battery packs🔌 Power bank projects🚗 Portable electronics & gadgets🔧 Arduino / ESP32 battery systems🔦 Rechargeable lighting systems📦 Embedded battery charging modules Package Includes 1 × Type-C USB 3A Lithium Battery Fast Charging Board (IP2312)

4S 100A LiFePO4 Lithium Battery Protection Balance Charging BMS Protection PCB Board
[Lithium Battery Protection Board] ⚡ 4S 100A LiFePO₄ BMS Protection Board with Cell Balancing (White PCB) 4S LiFePO₄ Battery Management System • 100A Protection • Active Cell Balancing • Temperature Protection The 4S 100A LiFePO₄ Battery Management System (BMS) Protection Board is a high-performance protection circuit designed specifically for 4-cell (4S) 12.8V LiFePO₄ battery packs. It provides comprehensive protection against overcharging, over-discharging, over-current, short circuits, and temperature abnormalities, ensuring safe and reliable battery operation. Equipped with 15 ultra-low resistance MOSFETs and an integrated cell balancing function, the BMS helps maintain equal voltage across all four battery cells, improving battery efficiency, performance, and service life. The onboard balancing circuit automatically equalizes cell voltages during charging, reducing cell imbalance and maximizing battery capacity. This BMS supports both common port (same port) and separate charge/discharge (different port) configurations. In common-port mode, it supports up to 60A continuous charge and discharge, while in separate-port mode it supports 80A continuous discharge and 60A charging. The board also includes a temperature sensor interface for additional safety. Designed exclusively for 4S LiFePO₄ (3.2V) battery packs, this protection board is not compatible with 3.7V Li-ion, Lithium Polymer (Li-Po), or ternary lithium batteries. ⭐ Features Designed specifically for 4S LiFePO₄ battery packs High-current 100A protection design Built-in automatic cell balancing Over-charge protection Over-discharge protection Over-current protection Short-circuit protection Temperature protection interface Ultra-low resistance MOSFET design Supports common-port and separate-port wiring Low power consumption Easy installation and wiring Improves battery safety and lifespan 📋 Technical Specifications Product Type: LiFePO₄ Battery Management System (BMS) Battery Configuration: 4S (4 Cells) Battery Chemistry: LiFePO₄ (3.2V Cells Only) Maximum Protection Current: 100A Continuous Discharge Current (Separate Port): 80A Continuous Discharge Current (Common Port): 60A Maximum Charging Current: 60A Balancing Function: Yes Balance Current: 50mA Balance Voltage Accuracy: 3.355V–3.455V Overcharge Protection Voltage (Per Cell): 3.61V–3.69V Overcharge Recovery Voltage: 3.50V–3.60V Overcharge Detection Delay: 1.5–2.5 Seconds Over-discharge Protection Voltage (Per Cell): 2.27V–2.43V Over-discharge Recovery Voltage: 2.45V–2.65V Over-discharge Detection Delay: 0.5–1.5 Seconds Short-Circuit Protection: Yes Short-Circuit Detection Delay: 100–600µs Short-Circuit Recovery: Disconnect Load Temperature Protection: Yes (Temperature Sensor Interface) MOSFET Configuration: 15 Ultra-Low Resistance MOSFETs 🔧 Applications Suitable for: 12.8V LiFePO₄ Battery Packs Solar Energy Storage Systems Portable Power Stations Electric Scooters Electric Bicycles Backup Power Systems UPS Battery Packs Marine Battery Systems Caravan & RV Power Systems DIY LiFePO₄ Battery Packs Robotics Projects Industrial Battery Systems Battery Repair & Maintenance 📦 Package Includes 1 × 4S 100A LiFePO₄ Battery Management System (BMS) Protection Board – White PCB ⚠️ Note Compatible only with 4S (12.8V) LiFePO₄ battery packs. Do NOT use with 3.7V Lithium-ion (18650), Li-Po, LiMn, LiCoO₂, or ternary lithium batteries. Ensure correct wiring according to the BMS connection diagram before use. Product color, PCB layout, and component placement may vary slightly depending on the manufacturing batch. All product images are for illustration purposes only.
Out of stock3S 100A LiFePO4 Battery Balance Charging BMS Protection PCB Board-White
[Lithium Battery Protection Board] This protection board is 3s in common use lithium battery protection board (you can adjust for how many strings to be used) Specified chip, stable performance, support disconnection protection, over-current protection, over-discharge protection, overcharge protection, with balance, etc. A common use for “same port” and “different port”, the protection board uses 15 high-power of ultra-low resistance MOS tubes (discharge of 8, charging 7), in the same port mode can support the discharge current 60A, charging current 60A; different port mode discharges current 80A, charging current 60A. Can used for LMO.Ternary lithium battery.LCO(3.7V)battery packs etc. Features: Temperature protect: Yes Disconnect protect: Yes Shortage protection: Yes Shortage delay: 100-600 uS Shortage protect recovery: YES Charging Current: 60A Current Balance: Yes Package Includes: 1 x White 4S 100A LiFePO4 Lithium Battery Protection PCB Board
Out of stockWhite 3S 100A LiFePO4 Lithium Battery Protection Balance Charging BMS Protection PCB Board
[Lithium Battery Protection Board] This protection board is 3s in common use lithium battery protection board (you can adjust for how many strings to be used) Specified chip, stable performance, support disconnection protection, over-current protection, over-discharge protection, overcharge protection, with balance, etc. A common use for same port and different port, the protection board uses 15 high-power of ultra-low resistance MOS tubes (discharge of 8, charging 7), in the same port mode can support the discharge current 60A, charging current 60A; different port mode discharges current 80A, charging current 60A. Can use for LMO. Ternary lithium battery. LCO(3.7V)battery packs etc. Specification: FOR Lithium POLYMER protection Board(3.7V) Single-cell battery overcharge protect voltage: 4.21-4.29 V Single-cell battery overcharge protect recover voltage: 4.14-4.24V Overcharge protect delay : 1.5-2.5S Single-cell battery over-discharge protect voltage: 2.72-2.88 V Overcharge protect Current: 100A Over-discharge protect Current : 100A Over-discharge protect delay : 0.5-1.5S Temperature protect: Yes Disconnect protect: Yes Shortage protection: Yes Shortage delay: 100-600 uS Shortage protect recovery: YES Charging Current: 60A Current Balance: Yes Ampere balance (Current) : 60MA Voltage balance accuracy: 4.14-4.24V Package Includes: 1 x White 4S 100A LiFePO4 Lithium Battery Protection PCB Board * Product Images are shown for illustrative purposes only and may differ from actual product.