7S 24V 20A Li-ion Battery BMS Protection Board – Battery Management System for 18650 Lithium Batteries

The 7S 24V 20A Li-ion Battery BMS Protection Board is a high-performance Battery Management System (BMS) designed to protect and manage 7-cell (7S) lithium-ion battery packs. It is ideal for use with 18650 lithium-ion cells, providing safe charging and discharging while extending battery life through comprehensive protection features.

Designed for battery packs with a nominal voltage of 25.2V (commonly referred to as a 24V system) and a maximum charging voltage of 29.4V, this BMS supports a continuous discharge current of up to 20A. It incorporates overcharge, over-discharge, overcurrent, short-circuit, and temperature protection (on supported models), along with cell balancing to ensure safe and reliable battery operation.

This protection board is widely used in electric bicycles, scooters, robotics, solar energy storage, UPS systems, portable power stations, and DIY battery pack projects.

Features
Designed for 7S (7-cell series) lithium-ion battery packs
Suitable for 18650 Li-ion cells
Nominal battery voltage: 25.2V (24V class)
Maximum charging voltage: 29.4V
Continuous discharge current: 20A
Built-in cell balancing
Overcharge protection
Over-discharge protection
Overcurrent protection
Short-circuit protection
Compact PCB design
Improves battery safety and lifespan

Applications
24V lithium battery packs
Electric bicycles (e-bikes)
Electric scooters
Robotics
Solar energy storage systems
Portable power stations
UPS backup systems
Electric tools
DIY battery pack projects
Industrial battery applications

Compatible Batteries
18650 Li-ion cells
21700 Li-ion cells (if configured as a 7S pack)
7S lithium-ion battery packs
7S lithium polymer (LiPo) battery packs (if supported by the cell specifications)

Technical Specifications
Battery Configuration: 7 Series (7S)
Battery Type: Lithium-ion / LiPo
Nominal Voltage: 25.2V
Maximum Charging Voltage: 29.4V
Continuous Discharge Current: 20A
Charge Current: Up to 20A (depending on charging system and cooling)
Balance Function: Yes
Protection Features:
Overcharge protection
Over-discharge protection
Overcurrent protection
Short-circuit protection
Temperature protection (available on some versions)
Applications: Battery charging, battery protection, and battery management

Package Includes
1 × 7S 24V 20A Li-ion Battery BMS Protection Board