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KWS - V20 USB Voltage Tester
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KWS - V20 USB Voltage Tester

- Cloudy
212177501

Current Battery Capacity Detector
4.85 47 Customer Reviews | Please refer to English description
6.42
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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- Cloudy

KWS - V20 USB Digital Voltage Current Tester Battery Capacity Detector- Cloudy

KWS - V20 USB Digital Voltage Current Tester Battery Capacity Detector- Cloudy

KWS - V20 USB Digital Voltage Current Tester Battery Capacity Detector- Cloudy


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Customer Reviews

4.85 out of 5
  • 40
  • 7
  • 0
  • 0
  • 0
See all 47 reviews Write a Review
  • D
    Yes (0) Color: Cloudy
    Nützlich um den Akkuzustand seiner Geräte zu überprüfen.
    Das Gerät ist sehr einfach zu handhaben. Einfach ins Ladegerät/Powerbank einstecken und an den Ausgang das zu ladende Gerät anschließen. Schon werden alle Daten automatisch erfasst.
    Auf den Bildern habe ich eine Nitecore Tip mit 500mAh Akku geladen.
    Der Akku was fast leer.
    Suggestion
    Absolut nichts. Sehr interessantes und nützliches Tool.

    Jul 13,2018

  • José
    Yes (0) Color: Cloudy
    Útil
    Comprobador de cargadores USB, Power banks, etc.
    En su pantalla indica el voltaje de salida de la fuente de energía usb a la que está conectado, y la corriente (Amperios) que está pasando al dispositivo que se está cargando,
    También es muy útil para comprobar la calidad de los cables de carga.
    Suggestion
    Ninguno

    Jun 06,2018

  • Gabe
    Yes (0) Color: Cloudy
    Perfect!
    everything is alright. the technical parameters of the product have changed compared to the description, this is the more advanced model:
    Model name: Keweisi KWS-V20
    Voltage: 4-20V +-1%
    Current: 0-3A +-1%
    Time: 0-99 hour
    Capacity: 0-99999mAh
    Suggestion
    nothing

    Jun 26,2018

  • servan
    Yes (0) Color: Cloudy
    Just good
    Good relation price - quality
    Good relation price - quality
    Good relation price - quality
    Good relation price - quality
    Good relation price - quality
    Good relation price - quality
    Good relation price - quality
    Good relation price - quality
    Good relation price - quality

    Sep 12,2018

  • José
    Yes (0) Color: Cloudy
    Muy útil
    Artículo muy util para comprobar voltaje y amperaje de cargadores usb, power banks, etc.
    También es útil para comprobar la calidad de los cables de carga.
    Buen precio
    Recomendado.
    Suggestion
    Ninguno

    May 22,2018

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