technology, stable heat dissipation. Over-voltage protection, over-discharge protection. Integrated solution, charging protection. Short-circuit protection, over-current protection. Made of high quality material, durable. Type: 4S 8A 14.8V Connection : common port Single battery over-discharge voltage: 2.7V0.08V Continuous working current: 8A Instantaneous protection current: 20A Over-current conditions: charging or disconnecting the load Short circuit conditions: charging or disconnecting the load Single cell overcharge voltage: 4.25V0.025V Continuous charging current: 6A Charging overcurrent protection: 10A Charger voltage: 16.8V (recommended) Charging over-temperature protection: 60C Discharge over-temperature protection: 80C Working power consumption: less than or to 20uA On-resistance of the main circuit: less than or to 15mohm Temperature range: -40~80 Disconnection protection: Yes Appearance size: 34x34x3.2MM Material: PCB colour: Green Package Contents: 2 x Lithium Battery Charge Board Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.