5S 10A 18.5V 21V high Current 3.6V Li-ion Lithium Battery BMS 18650 Charger Protection Board (for 5 Cells in Series 10A)

• This is a Li-ion Battery Charging board with Over-charging and over-discharge protection.

• The board is based on 1 x BM3451 + 4 x LR8726 chip-set. It can charge 5 li-ion cells and is not balanced.

• The BM3451 is a professional protection IC for 3/4/5 cells rechargeable battery pack; it is highly integrated, and generally used in power tools, electric bicycles, and UPS applications.

• The BM3451 works constantly to monitor each cell’s voltage, the current of charge or discharge, and the temperature of the environment to provide overcharge, over-discharge, discharge overcurrent, short circuit, charge overcurrent and over-temperature protection, etc.

• Besides, it also can change the protection delay time of overcharge, over-discharge and discharge overcurrent by setting the external capacitors.

• The BM3451 provides external bleeding for the cell-capacity balance function to avoid unbalanced capacity between each cell. Thus, the batteries can work for longer.

Specification:

• Charging voltage range:: 18.5V / 21V; Use 5 Cells in Series

• Over-discharge recovery voltage: 2.90v ± 0.08v,

• Maximum operating current: 10A, Maximum instantaneous current: 15A-20A, Static current: less than 20uA

• Resistance: less than 30mΩ

• Short circuit protection: protect and automatic recovery, balanced: No