4S 40A 16.8V Li-Ion Battery Protection Board (BMS) for 18650 Batteries

QAR 19.00/ unit

Description

The 4S 40A 16.8V Li-Ion Battery Protection Board (BMS) is designed to provide reliable protection and management for 4-cell lithium-ion battery packs built with 18650 cells. It enhances battery safety by monitoring charging and discharging conditions while protecting against overcharge, over-discharge, overcurrent, and short-circuit events. With support for up to 40A continuous discharge current and 20A charging current, this BMS is suitable for high-power battery packs used in electric mobility, energy storage systems, power tools, robotics, and DIY battery projects. Its compact design allows easy integration into custom battery pack assemblies. Features • Designed for 4S lithium-ion battery packs • Compatible with 18650 lithium-ion cells • Supports 16.8V battery charging systems • Continuous discharge current up to 40A • Continuous charge current up to 20A • Overcharge protection function • Over-discharge protection function • Overcurrent protection function • Short-circuit protection function • Compact PCB design for battery integration • Suitable for high-power battery applications • Reliable battery monitoring and management • Improves battery pack safety and lifespan • Ideal for DIY and commercial battery packs Tutorials • How to Safely Connect a 4S Li-Ion 40A BMS (14.4V-16.8V) for Optim