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(OLED USB detector voltmeter ammeter power capacity tester meter)



Brief Taiwan 1 Taiwan 2 China
Dimension Taiwan 1 Taiwan 2 China
Schematic Taiwan 1 Taiwan 2 China


  • This is the mini USB meter. It can measure voltage, current, power and capacity.
  • It adopts the OLED screen, it can clearly display all the data. And it display two colors font, white and blue.
  • It has three functions:Screen rotation,Power-down storage andOver-voltage and Under-voltage reminding.
  • It forbid for being used for inductive load, eg: the load with motor and fan. it can be used digital products, eg: mobile phone,power bank,USB flash drive and etc..


    Technical Parameters

  • Voltage range:DC3.500 -7.000V
  • Voltage accuracy:± (0.2% + 3words)
  • Current range:DC0.000-3.000A
  • Current accuracy:± (0.8% + 3words)
  • Capacity accumulation:0-99999mA; 0-700Wh 
  • Capacity resolution: 1mAh; 1mWh
  • Product Weight:10g (package 30g)
  • Idle discharge: about 10mA
  • Display mode:0.91" OLED Screen
  • Physical size:57 x 20 x 10mm (L*W* H)
  • Update rate: 2 times/s

Voltage range


Voltage accuracy

±(0.2%+3 digit)

Current range


Current accuracy

±(0.8%+3 digit)

Capacity accumulation


Capacity resolution


Product Weight

10g (package 30g)

Product size


Update rate

2s /time

Display font color


Other function

  • Current zero calibration function
  • Over-voltage and Under-voltage reminding function
  • Capacity stored function
  • Capacity unit switch function
  • Screen rotation function
  • Shut-down screen function
  • Power-down storage
  • 0-9 groups data set Capacity stored function
  • Current zero calibration function



Web Shop

Unit price: USD 15
(OLED USB detector voltmeter ammeter power capacity tester meter) x1

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