YACSEJAO USB Multi-meter plugs directly into any USB socket or Micro-USB charger or cable. It displays on the screen the voltage, current and capacity. Acts as both a vol and amp meter. It is powered when you plug it in so no batteries are needed.
Product features:
At the same time display voltage current and mAH data, easy to view
Mobile power output mAH can be detected
Multiple groups of detection data saving, power-off saving function
Data transmission is not affected
Higher precision, current parameters will not jump
Current sampling 25 mm, less loss
With precision current calibration function, higher current accuracy
Product Parameter:
Input Voltage: 3V-7V
Voltage Resolution: 0.01V
Test Current: 0.05A-3.5A
Current Resolution: 0.01A
Capacity Range: 0-19999mAH
Accuracy: plus or minus 1%