Youmile 10PCS 2S 7.4V 8.4V 8A Lithium Battery Protection Board 18650 Charger Module BMS PCB Protection Board for Li-ion Lithium Battery Cell with Nickel Strip

• Overcharging Range: 4.25 ± 0.05V to 4.35V; Over Voltage Range: 2.3 ± 0.05V to 3.0V; Maximum working current: 8A; Maximum instantaneous current: 16A
• High-accuracy voltage detection circuit, fine workmanship and durable, Effective life greater than 50000 hours.
• Protection: Over-discharge Protection, Overcurrent Protection, Overcharge Protection, Short Circuit Protection;
• Widely used for LED light backup power supply, solar street light battery pack, monitor standby power supply, etc.
• Package Content:10 x 10PCS 2S 7.4V 8.4V 8A Lithium Battery Protection Board, 1 x 39.inch/1m Nickel Strip

Charging Voltage: 8.4V-9V Overcharge Voltage Range: 4.25V-4.35V± 0.05V Overpressure Voltage Range: 2.3V-3.0V ± 0.05V Upper Limit Operating Current: 8A Upper Limit Instantaneous Current: 16A Quiescent Current: less than 10uA Internal Resistance: less than 300mΩ Effective Life: more than 50,000 hours Operating Temperature: -40- +50 Celsius Storage Conditions: -40- +80 Celsius Short circuit protection: Can be protected, charge recovery required Size: 41mm x 8mm x 2.2mm/ 1.61 × 0.31 ×0.09inch(L x W x H) Wiring: B+ : Connect to battery positive. B- : Connect to battery negative. MB: Connection point between battery 1 and battery 2. P+: Positive pole for charging/discharging (common at charging/discharging end). P- : Negative pole for charging/discharging end (common at charging/discharging end). Note: 1.Strictly according to the diagram wiring,Otherwise it will cause damage to the chip. 2.Do not mix good batteries with bad batteries! The capacity/internal resistance of the 3 batteries should be as close as possible 3.the product must be connected to a 8.4V charging voltage through p+ and p- before it will create voltage on pads.Or you can activate this BMS by momentarily shorting b- and p-