parameter:

Weight: 30 grams

Dimensions: 60*28.5*15(mm)

Material: PVC
Line length is about 15 cm
Input voltage: 3V-7V
Voltage resolution: 0.01V
Test current: 0.05A-3.50A
Current resolution: 0.01A
Capacity range: 0-19999mAH
Accuracy: plus or minus 1pct
Line loss: about 0.1 ohm
Test content: battery voltage, current, discharge capacity (10 groups of data in total)

Features: 
Simultaneous display of voltage and current and mAH data for easy viewing
Can detect mobile power output mAH 
Multiple sets of test data are saved, power-down save function
Does not affect data transmission
Higher precision, the current parameters will not jump
USB male and MicroUSB ports are dual-powered to detect MicroUSB line quality
Current sampling 25 milliohms, less loss
With precision current calibration, current accuracy is higher (calibrated when shipped)