Feature *Over voltage range: 4.25-4.35v ± 0.05v; Over discharge voltage range: 2.3-3.0v ± 0.05v *Maximum operating current: 0-25A ;Maximum transient current: 34-40A *Wiring:(please check the picutre 3 wiring diagram)Strictly according to the diagram wiring: 0V(B )3.7V(B1)7.4V(B2)11.1V(B+), Do not deliberately short circuit. After the line is connected, Need to charge 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 same, please fill in each set of batteries and then use. Do not mix the good battery and the battery. *Attention: Do not mix the good battery and poor battery to use. The internal resistance of 3 battery capacity are closer will be better. Specification: Size: about 56mm*45mm*1.2mm Over voltage range: 4.25-4.35v±0.05v Over discharge voltage range: 2.3-3.0v±0.05v Maximum operating current: 0-25A Maximum transient current: 34-40A Quiescent current: less than 30uA Internal resistance: less than 100mΩ Working temperature: -40---+50℃ Storage condition: -40-- +80℃ Effective life: more than30000h Equalization current: 45 mA Charging voltage: 12.6V-13V Short circuit protection: Yes, delayed self recovery Precautions: Strictly according to the diagram wiring: 0V(B-)3.7V(B1)7.4V(B2)11.1V(B+), Do not deliberately short circuit. After the line is connected, Need to charge 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 same, please fill in each set of batteries and then use. Do not mix the good battery and the battery. The capacity of the battery internal resistance is closer will be better. Attention: Do not mix the good battery and poor battery to use. The internal resistance of 3 battery capacity are closer will be better. Please buyers know the professional knowledge of this module before buying Package included: 1*PCB Protection Board Note: Due to different producing batches, product details might be a little different. If you minding the difference, please buy it carefully. Please allow 1-5mm differs due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same *Over voltage range: 4.25-4.35v ± 0.05v; Over discharge voltage range: 2.3-3.0v ± 0.05v *Maximum operating current: 0-25A ;Maximum transient current: 34-40A *Wiring:(please check the picutre 3 wiring diagram)Strictly according to the diagram wiring: 0V(B )3.7V(B1)7.4V(B2)11.1V(B+), Do not deliberately short circuit. After the line is connected, Need to charge 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 same, please fill in each set of batteries and then use. Do not mix the good battery and the battery. *Attention: Do not mix the good battery and poor battery to use. The internal resistance of 3 battery capacity are closer will be better.