· Working Current: 3A · Instantaneous Peak Current: 5A · Over Charge Voltage Range: 4.25-4.35V ± 0.05V · Over Discharge Voltage Range: 2.5-3.0V ± 0.05V · Over-Discharge Detection Voltage: 2.3-3.0V±0.05V · Maximum Working Current: 3A · Operating Temperature : -40-50 C · Transient Current: 5A · Internal Resistance: Less than 45m Ω · P+ P- is the abbreviation of PACK+ PACK-, that is, the output of positive and negative poles · B+ B-is the abbreviation of battery, which is the positive and negative pole of the battery 2S 3A Li-ion Lithium Battery 7.4V 8.4V 18650 Charger Protection Board Module is a small PCB mounted Li-ion Lithium Battery charger protection module.