Features 1、Application field of this over discharge protection module is 3.7V lithium battery 18650 2、Come with the functions of overcharge protection, overdischarge protection for charger 3、The product can provide short circuit protection, over current protection, very practical 4、The module comes with lithium battery protection function, very useful in your life 5、This is a battery-powered equipment, have stable structure, excellent performance and long service life Specification Item Type: Over Discharge Specification: Overcharge Detection Voltage: 4.28±0.05V Overcharge Release Voltage: 4.26±0.05V Over-Discharge Detection Voltage: 2.5±0.1V Overcurrent Detection Current: 1-3A Overcurrent Protection: 3.2±0.2A Wiring: B- connect to the negative terminal of the battery B+ connected to the positive terminal of the battery P+ connect the charger / positive P- connect the negative pole of the charger/load Package List 1 x Over Discharge