4S 30A 18650 Lithium Battery Protection Board 14.8V/16V with Cable

A 4S 30A lithium battery protection board for 18650 pack builds, this battery management module safeguards 14.8V/16V four-cell lithium battery packs during charging and discharging. Designed for DIY battery packs, robotics, portable power, LED systems, and backup energy projects, it helps manage pack safety with protection against common battery faults such as overcharge, over-discharge, overcurrent, and short circuit conditions. The included cable simplifies wiring, making this 4S BMS a practical choice for custom Li-ion packs that need reliable current handling and everyday protection in hobby and repair applications.