1 x Main unit (18cm＼2cm) 1 x Chinese / English manual 1 x Load resistance
No need professional cable connecting、 simple and convenient; Plug in USB port、 charge and discharge、 monitor working voltage and current、 and calculate battery capacity; Dual USB output function Input voltage range: 3~15V Input current range: 0~3.5A Voltage measurement error: 3~15V ±1% Max. Capacity value: 9999mAh Storage data: 9 groups Current measurement error: 50-3500mA±1% Load resistance: Long time stable discharging testing capacity Dimensions: 2.52 in x 1.06 in x 0.63 in (6.4 cm x 2.7 cm x 1.6 cm) Weight: 1.73 oz (49 g)