3.7V 4S 60A BMS with balanced protection board for 21700/18650 lithium batteries and built-in temperature control protection

Quantity : 1 High-concerned chemical : none Package : TQFP Type : Module Brand Name : DIY NOW Origin : Mainland China Condition : New

Features 1. Designed for 4-series lithium battery packs, supports 21700/18650 cells 2. Maximum continuous output 60A, peak current up to 110A 3. Built-in thermal protection mechanism, automatically shuts down at 60°C for cooling 4. Features active balancing function to enhance battery consistency 5. Includes overcharge and over-discharge protection for comprehensive safety 6. High-density PCB layout ensures strong anti-interference capability and stable operation Parameter Overcharge Detection Voltage: 4.25V Overcharge Release Voltage: 4.19V Overdischarge Detection Voltage: 2.8V Overcharge/Discharge Release Voltage: 3V Port Specifications: 1.25mm interface Default max output current: 60A, with temperature-controlled charging/discharging and 60°C protection Features 6 high-current, ultra-low internal resistance nMOS transistors (individual nMOS internal resistance as low as 3.4mR), supporting instantaneous max 110A and stable 40A output. Heatsink recommended for extreme conditions On-board ports can connect to battery equalization wires or be soldered per wiring diagram This lithium battery protection board, featuring BM3451 as the main controller, incorporates built-in balancing functionality and is perfectly matched for 4S battery packs. Wiring Precautions 1. Basic technical electronics knowledge is required. 2. Battery connection wires should be short and thick. Package include Lithium Battery Protection Board*1

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