Features: Built-in high precision voltage detection circuit. Adopt high withstand voltage terminal to be connected with the charger. Built-in 3-stage overcurrent detection circuit (overcurrent 1, overcurrent 2, load short circuit). Can control charge and discharge of the battery through MOS tube. Wide operating temperature range -40~50℃, low current consumption. Suitable for 2S rechargeable battery pack including Ni-Co-Mn lithium cell, Li-Co cell, Li-Mn cell, LiPo cell. Specification: Charging Voltage: DC 9V Max. Continuous Discharging Current: 5A Overcharge Detection Voltage: 4.29V±0.025V Overcharge Detection Delay:1s Overcharge Recovery Voltage: 4.05V±0.025V Overdischarge Detection Voltage: 3V±0.1V Overdischarge Detection Delay: 128ms Overdischarge Recovery Voltage: 3.2V±0.1V Overcurrent Detection Current: 200mA±20mA Overcurrent Detection Delay: 12ms Overcurrent Recovery: Auto recovery Short Circuit Detection Delay: ≤50μs Short Circuit Recovery: Auto recovery Operating Temperature: -40~50℃ Storage Temperature: -40~125℃ Package Weight: 1g Welding Point Description: B+: Connected to positive pole of battery B-: Connected to negative pole of battery MB: Connected to the connection point of battery 1 and battery 2 P+: Connected to positive pole of the charge/discharge terminal (Charge terminal and discharge is shared) P-: Connected to negative pole of the charge/discharge terminal Package List: 1 x Lithium Battery Protection Board