4S BMS

The 4S 40A Balanced Version 18650 Li-ion Battery Series BMS Charger Protection Module manages and protects four-series lithium-ion battery packs (14.8V to 16.8V). It supports up to 40A current and features balanced charging along with comprehensive protection against overcharge, over-discharge, overcurrent, and short-circuit conditions. Ideal for high-power applications such as electric vehicles and power tools, it ensures safe, efficient, and reliable battery operation.