4S 20A Battery Protection Board (BMS) – 12.8V / 14.4V with Balance- LiFePO4 BMS

LiFePO4 / Lithium Battery Charge Protection Board for 18650 & 32650 Battery Packs

The 4S 20A Battery Management System (BMS) is designed to protect and manage 4-series lithium battery packs used in various electronic and energy storage applications. It supports 3.2V LiFePO4 and 3.7V Li-ion batteries, making it suitable for battery packs built with 18650 or 32650 cells.

This BMS provides essential protection features such as overcharge protection, over-discharge protection, overcurrent protection, and short-circuit protection. It also includes a balancing function, which helps maintain equal voltage across each battery cell, improving the safety, efficiency, and lifespan of the battery pack.

With a maximum continuous current of 20A, the module is ideal for DIY battery packs, solar energy systems, electric tools, and portable power devices.

Key Features

1. 4S BMS for lithium battery packs
2. Supports 3.2V LiFePO4 and 3.7V Li-ion batteries
3. Maximum 20A continuous discharge current
4. Built-in cell balancing function
5. Protection against overcharge, over-discharge, overcurrent, and short circuit
6. Improves battery pack safety and lifespan
7. Suitable for 18650 and 32650 battery packs

Specifications

Applications

1. DIY lithium battery packs
2. Solar energy storage systems
3. Electric bikes and scooters
4. Portable power supplies
5. Power tools and backup battery systems

Package Includes

1. 1 × 4S 20A Lithium Battery Protection Board (BMS) with Balance