3s 4s 40A lithium battery charger protection board for 18650 cells

This battery protection board is designed to safely charge and protect 18650 lithium-ion batteries. The board supports both 3s and 4s configurations and is ideal for applications such as drills, drones and other electronic devices that require reliable and stable power.

Suitable for 18650 lithium-ion batteries

Supports 3s (11.1V) and 4s (14.8V) configurations

Maximum continuous current: 40A

Improved balancing system for even loading

Protects against overload, short circuit and overheating

Ideal for use in drills and similar applications

Easy installation and compatible with various devices

With this protection board you can extend the life of your batteries and use your electronic devices safely.