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KWS - V20 USB Voltage Tester

Current Battery Capacity Detector

USD
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Warehouse Ships onNov 25
China
Selected CLOUDY

Customer Reviews

  • Barry Kelly

    Nov/08/2017 09:32:01
    Pros:
    A solid product. Appealing clean look.
    Cons:
    My only complaint is that if the current draw is less than 0.01, the device doesn\'t record/accumulate current usage. i.e. the time and mAh stay at zero.
  • George Kasselakis

    Nov/01/2017 03:07:03
    Pros:
    Nice tester and quite accurate! Very usefull to test your cellphone/tablet and other chargers
    Cons:
    Cant find any

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Main Features:
Multifunctional Testing Tool, it can measure voltage, current, discharge flow, also includes timing, over flow and voltage protection
Small size,easy to carry and store, you can use it anywhere and anytime
The screen displays current and voltage data for easy viewing
With automatically save data function when interruption of power supply

Measuring Method:
USB input port is plugged in 5V charger, USB output port is connected to mobile phone, directly read the current and voltage parameters
Measuring Micro USB line quality: USB output port is connected to mobile phone, USB input port is plugged in the 5V charger first, remember the voltage, then Micro USB input port is connected to 5V charger, remember the voltage. The smaller the voltage difference, the better the quality of the Micro USB line
Use TP4056 and other linear charging circuit, through this capacity table, to fully charge the battery with completely no power, the capacity data is the battery capacity, and using this method, you can also test the mobile phone charging capacity
Connect this testing tool to portable power source and turn on it. Press the button until the capacity data is zero. Insert the cell phone to charge until the portable power source switches off automatically. The next time you open this testing tool, the display capacity is the portable power source output mAh

Parameter:
Voltage ( input / output ) : 3V - 9V
Voltage resolution: 0.01V
Current ( input / output ) : 0A - 3A
Current resolution: 0.01A
Accuracy: + / - 1 percent

Specification

Specifications

Application: Computer,Mobile phone

Dimensions and Weight

Product weight: 0.0190 kg
Package weight: 0.0410 kg
Product Size(L x W x H): 7.30 x 2.40 x 1.30 cm / 2.87 x 0.94 x 0.51 inches
Package Size(L x W x H): 12.00 x 8.00 x 1.50 cm / 4.72 x 3.15 x 0.59 inches

Package Contents

Package Contents: 1 x USB Detector

KWS - V20 USB Digital Voltage Current Tester Battery Capacity Detector

KWS - V20 USB Digital Voltage Current Tester Battery Capacity Detector

KWS - V20 USB Digital Voltage Current Tester Battery Capacity Detector

KWS - V20 USB Digital Voltage Current Tester Battery Capacity Detector


5
Price
Ease of Use
Build Quality
Usefulness
Overall Rating
  • Barry Kelly

    Nov/08/2017 09:32:01
    Pros:
    A solid product. Appealing clean look.
    Cons:
    My only complaint is that if the current draw is less than 0.01, the device doesn\'t record/accumulate current usage. i.e. the time and mAh stay at zero.
  • George Kasselakis

    Nov/01/2017 03:07:03
    Pros:
    Nice tester and quite accurate! Very usefull to test your cellphone/tablet and other chargers
    Cons:
    Cant find any
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KWS - V20 USB Voltage Tester

KWS - V20 USB Voltage Tester

$6.51

Warehouse Options

  • China
KWS - V20 USB Voltage Tester

KWS - V20 USB Voltage Tester

$6.51

Color

  • CLOUDY
  • CLOUDY
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