Features: The protection board is for 5 series cell Li-ion batteries of electric power tool, 18650, etc. Charging connector and discharging connector are same, discharging current is 15A. Support overcharge protection, over-discharge protection and short circuit protection. Stable various charging and discharging protective functions are great for 5S battery protection. Choosing the correct protection board and applying it appropriately is vital to the longevity your batteries. Specifications: Discharge Large Discharge Current 15A Momentary Discharge Current 25A Charge Charge Voltage 21V Charge Current 15A(Max.) Overcharge Protection Overcharge Detection Voltage 4.28±0.05V Overcharge Protection Delay 0.5S Overcharge Cancel Voltage 4.08±0.05V Over-discharge Protection Over-discharge Detection Voltage 2.55±0.08V Over-discharge Detection Delay 0.1S Over-discharge Cancel Voltage 2.9±0.1V Overcurrent Protection Overcurrent Detection Voltage 150mV Overcurrent Detection Delay 9mS Overcurrent Protection Current 30±3A Protection Cancel Condition Disconnect Load Short Circuit Protection Short Circuit Protection Condition Outside Load Short Circuit Short Circuit Detection Delay 250uS Protection Cancel Condition Disconnect Load Internal Resistance Main Circuit Conduction Internal Resistance ≤20mΩ Self Power Consumption Working Current ≤30uA Sleeping Current(Battery Over-discharge) ≤10uA Operating Temperature -30℃~+80℃ Size 88*17*3mm/3.46*0.67*0.12" Package Includes: 1 x Protection Board Note: 1. This product is not included battery. .