ITEM NAME:3.7V 4.2V 18650 Li-Ion Lithium Battery Charger Over Discharge Protection Mo I6Y6 3.7V 4.2V 18650 Li-Ion Lithium Battery Charger Over Discharge Protection Mo I6Y6 Protects a single 3.7V lithium battery: Protect multiple 3.7V lithium batteries (no more than 10pcs recommended): Product Name: 3.7V 4.2V 18650 Li-ion Lithium Battery Charger Over Discharge Protection Module Description: Functions: Over Charge Protection Over Discharge Protection Short Circuit Protection Overcurrent Protection Parameters: Over Charge Detection Voltage: 4.28Â ±0.05V Over Charge Release Voltage: 4.26Â ±0.05V Over Discharge Detection Voltage: 2.5Â ±0.1V Over current Detection Current: 1-3A Overcurrent protection : 3.2Â ±0.2A Size : 12.6x10.2x2.1mm Weight : 0.34g Note: Please charge the first time, activate the protection board. Otherwise there is no voltage output Wiring: B- connected to battery negative B+ connected to battery positive P+ Connect the charger/load positive P- Connect the charger/load negative Applications 3.7V lithium battery 18650 TP4056 Charging module Color: green Material: PC + metal Package Contents:1 PCS Lithium Battery Charger Over Discharge Protection Module.3.7V lithium battery 18650. Protects a single 3.7V lithium battery Short Circuit Protection. Over current Detection Current: 1-3A. B- connected to battery negative. B+ connected to battery positive.