Lithium Battery Charger Protection Module (BMS) 4S 5A 14.8V

From the shop's description

Li-Ion 14.8V 4S Charge/Discharge Protection Circuit Specification: Over-discharge Voltage Range: 2.3-3.0v ± 0.05v Charging Voltage Range: 4.25-4.35v ± 0.05v Size: 67 x 16 x 1.0mm Maximum Operating Current: 4-5A Maximum Instantaneous Current: 6-7A Static Current: less than 6uA Working Temperature: -40 to+50℃ Storage Conditions: -40 to+80℃ Effective Life: more than 30,000 hours Internal Resistance: less than 45mΩ Short Circuit Protection: protect, restore need to be recharged Notes: Strictly according to the diagram wiring: 0V(B-) 3.7V(B1) 7.4V(B2) 11.1V(B3) 14.8(B+), Do not deliberately short circuit. After the wire is connected, it needs to charge the batteries first, then have output. When the battery is connected in series with 3 groups, please ensure that the voltage of each battery is the same. If not the same, please fill in each set of batteries and then use them. Do not mix the good battery and the battery. It will be better the capacity of the battery internal resistance is closer.