USB Power Meter
This device is a meter that can measure the voltage output, the mAh for the entire duration usage until reset switch is pressed and real-time current draw. It features a nice led display to show the values and has a blue see through body with back lighting. You can use this device to check the current and voltage from any USB portable cell batteries. It also has a timer to indicate how much time is remaining to charge a portable cell battery.
Voltage: 3V – 9V
Current: 0-3A
Time limit: 0 -99H
Battery Capacity limit: 0 -99999mAh
Size: 7.2 x 2.2 x 1.1 cm (D x W X L)