Features: The protection board is for 3 series cell Li-ion batteries, it can be used for ternary batteries, manganese acid batteries and cobalt acid batteries. Charging connector and discharging connector are same, continuous discharging current is 50A. Stable various protective functions for charging and discharging, such as overcharge protection, over-discharge protection and short circuit protection. It has balance function which would ensure each battery cell being fully charged at same time. Choosing the correct protection board and applying it appropriately is vital to the longevity your batteries. Specifications: Discharge ContinuousDischarge Current 50A Momentary Discharge Current 150A Charge ChargeVoltage 12.6V Charge Current 50A Overcharge Protection OverchargeDetection Voltage 4.280.025V Overcharge Protection Delay 0.5S Overcharge Cancel Voltage 4.080.1V Balance BalanceDetection Voltage 4.200.025V Balance Cancel Voltage 4.200.05V Balance Current 605mA Over-discharge Protection Over-dischargeDetection Voltage 2.80.1V Over-discharge Detection Delay 0.1S Over-discharge Cancel Voltage 3.00.1V Overcurrent Protection OvercurrentDetection Voltage 150mV Overcurrent Detection Delay 9mS Overcurrent Protection Current 20010A Protection Cancel Condition DisconnectLoad Short Circuit Protection ShortCircuit Protection Condition OutsideLoad Short Circuit Short Circuit Detection Delay 250uS Protection Cancel Condition DisconnectLoad Internal Resistance MainCircuit Conduction Internal Resistance 25m Self Power Consumption WorkingCurrent 30uA Sleeping Current(Battery Over-discharge) 10uA Operating Temperature -30-and80 Size 8x5.5x0.8cm or 3.15x2.17x0.31" Package Includes: 1 x Protection Board 1 x Cable Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering..