AJMRTC 4S 60A Lithium Battery Protection Board with Balance Function, 3.7V Cell BMS PCB Module for 21700 LithiumIon Battery Pack OverCharge OverDischarge ShortCircuit Protection

AJMRTC 4S 60A lithiumion BMS protection board is designed for 4series 3.7V 21700 lithiumion battery packs. It integrates cell balancing function which automatically adjusts voltage difference between individual battery cells during charging process, preventing uneven cell degradation and improving the whole battery packs consistency and service lifespan. Apart from balance management, this BMS implements comprehensive safety mechanisms: overcharge cutoff, overdischarge cutoff, overcurrent limitation and shortcircuit protection. Once abnormal electrical conditions occur, the module will rapidly cut off circuit output to protect battery cells and connected loads. Rated continuous current reaches 60A to satisfy highcurrent application scenarios. Exposed solder pads allow easy soldering connection with 21700 battery cells. Perfect for DIY energy storage systems, portable power equipment and custom lithium battery projects. Please strictly follow wiring sequence during installation; wrong wiring will damage the module. This item is BMS board only, battery cells are not included.

Brand: AJMRTC Type: 4S Lithiumion BMS Protection Board with Balancing Cell Compatibility: 4Series 3.7V Lithiumion Cells, 21700 Continuous Current: 60A Protection Features: OverCharge, OverDischarge, OverCurrent, ShortCircuit, Cell Balancing Application: DIY lithium battery pack, energy storage, power equipment modification Connection Method: Solder pad soldering Package Content: 1 x 4S 60A BMS Protection Board