This is 1S 18650 Li-ion Lithium Battery BMS Charger Protection Board for 3.7V Battery.

Protections:

• Short circuit protection
• Overcharge protection
• Over-discharge protection
• Over-current protection

Pins description:

P- : negative of input or output power
P+ : positive of input or output power
B- : negative of the battery
B+ : positive of the battery

Features:

• High accuracy voltage detection circuit;
• Using high voltage device charging terminal;
• The built-in three-stage overcurrent detection circuit (overcurrent 1, overcurrent 2, load short circuit);
• The battery charge and discharge can control the MOS transistor;

Specifications: