Features: Protection circuit board is the heart of battery pack, must to have to avoid battery pack from explosion, fire and damage. It will protect battery pack from overcharging, over-discharging over-current and short circuit. With equilibrium function to keep each cell in balance and good service life. Used for 3 series 12V LiFePO4 batteries, comes with 4P-400mm wire. Choosing the correct protection board and applying it appropriately is vital to the longevity your batteries. Specifications: Discharge Continuous Discharging Current 100(MAX) A Instantaneous Discharge Current 150 A Charge Charging Voltage 12.6 V Charging Current 10(MAX) A Overcharge Protect Over-charge Detect 4.280.05 V Protect Delay 0.5 S Over-charge release 4.080.1 V Balance Detect Voltage 4.200.05 V Release Voltage 4.200.05 V Balance Current 425 mA Over-discharge Protect Over-discharge Detect 2.80.1 V Over-discharge Detect delay 0.1 S Release Voltage 3.00.1 V Over-current Protect Detect Voltage 150 mV Detect Delay 9 mS Current Detect 20010 A Release Condition Cut Load Short-circuit Protect Protect Condition Load Short Circuit Detect Delay 250 uS Release Condition Cut Load Temperature Protect / / Resistance Inner 25 m Self-Consumption Working Current 20 uA Sleep Current (when Over-discharge) 10 uA Working Temperature Range -30/+80 Size: 70*51.5*10mm / 2.75*2.02*0.39" Package Includes: 1 x Battery Protection Board