●Battery capacity: 2*1600mAh or customized
●Charging time is 4-6H, full power work is 6-8H or there is difference according to customized capacity data
●Fan speed parameters: weak gear: 7V 0.14A 2200 rpm, wind speed 4.4 m/sec; strong gear: 9V 0.17A 2600 rpm, wind speed 5.5 m/sec