Indicate that there should be no obvious scratches, cracks, stains, leaks, deformations and other appearance defects that affect product performance
1: No flying line, device loosening
2: Converter shell surface should be smooth, no impurities, no scratches, warping degree is less than 2%
3: Screen printing is clear to meet safety requirements

Rated Capacity
Battery Capacity

After standard charging, the battery pack outputs at 0.2C and cuts off at 2.75v. The total amount of electricity discharged
The capacity should be measured via 48V5A discharge and cut-off at 37.5V after battery full charged

Cycle life
Cycle Life

After standard charging, the battery pack is discharged at 0.2C to 2.75V, and the cycle is continued until the remaining capacity is 70%.
After standard charging, discharging battery via 0.2C until 2.75V cut-off voltage, repeat above circle till remained capacity is 70%