The battery have reliable quality. It have passed test like high/low temperature performance,electronic load maintenance ability test,overcharging/discharging protective test and more. Battery also have CE,FCC,ROGH,SGS certificate,you can feel free to purchase and use.
specification
1.Rating Voltage 7.4 V 　   
2.Capacity Minimum：2000mAh 0.2C
3.Charge Voltage：8.4V±0.1V 　
4.Impedance ：130mΩ（Max） 　   
5.Charging Mode：C.C/C.V.  
6.Charging Metho：Standard Charging 0.2C 
                Fast Charging 1C 
7.Charging Time：Standard Charging 5.0Hours 　
              Fast Charging                   2.0 Hours 
8.End of Discharge： 5.5V 　
9.Overcharge Voltage ：8.4±0.05V 　
10.Over Discharge Cut Off Voltage 5.5±0.08V 　
11.Over Current： 2-6A 　
12.Short Circuit: Recover after removing the short circuit load 　 　 13.ESD Test : ±4KV 　
14.Cycle Life: >300cycle 　
15.Size: 67.5±0.2mm（L）*36.5±0.2mm *（W）18.3±0.2mm（H）