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

Brand: CentIoT

Features:

• 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

Details: This is 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 cell 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 over-current, short circuit, charge overcurrent and over-temperature protections, 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 cell-capacity balance function to avoid unbalanced capacity between each cell. Thus, the batteries can work for longer.