Test method IEC 62133 4.2.3 / UL2054 #20
Place fully charged battery packs in oven at 70degC +/-2degC for 7 hours.
Remove and allow to cool to room temperature before inspection.
At end of test record all data from software monitor, including pack voltage, cell voltage, Remain capacity, RCP, counter values, use time, etc.
Measure pack voltage and self discharge current with multi-meter.
Test pack function unit, record charge time and discharge time, check LED functions.
Pass criteria : no abnormal function or damage to battery pack.