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KWS - V20 USB Voltage Tester

Current Battery Capacity Detector
4.93 15 Reviews
$5.24

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Ship between: Jul 19 - Jul 22
China
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Customer Reviews

José
Jun 06,2018 15:43:48
Pros:
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.
Cons:
Ninguno
Gabe
Jun 26,2018 09:33:39
Pros:
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-V20Voltage: 4-20V +-1%Current: 0-3A +-1%Time: 0-99 hourCapacity: 0-99999mAh
Cons:
nothing
José
May 22,2018 17:50:21
Pros:
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 precioRecomendado.
Cons:
Ninguno
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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



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  • Photos (11)
  • Videos
4.93 *****
José
Jun 06,2018 15:43:48
Pros:
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.
Cons:
Ninguno
Gabe
Jun 26,2018 09:33:39
Pros:
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-V20Voltage: 4-20V +-1%Current: 0-3A +-1%Time: 0-99 hourCapacity: 0-99999mAh
Cons:
nothing
José
May 22,2018 17:50:21
Pros:
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 precioRecomendado.
Cons:
Ninguno
Pavel
Jun 19,2018 22:06:55
Pros:
Качественные материалы изготовления,соответствует описанию продавца,лёгкость в использовании,есть кнопка сброса показаний,интересный дизаин
Cons:
Во время использования недостатков не обнаружил
Zsolti
May 14,2018 19:11:10
Pros:
I'm happy with the delivery. Everything works well. It looks very good on the backpack. It's good to use, lots of things fit.
Cons:
non.
George Kasselakis
Nov 01,2017 08:07:03
Pros:
Nice tester and quite accurate! Very usefull to test your cellphone/tablet and other chargers
Cons:
Cant find any
Joeycoche
Mar 02,2018 14:41:15
Pros:
Very good device, very practical to see if there is any damage to the cable or the devices' power socket
Cons:
No
Вадим
Jul 10,2018 13:26:40
Pros:
Соответсвует описанию, быстрая доставка, цена, отличная вещь кому интересны цыферки (емкость, скорость зарядки аккума)
Cons:
нет
palaouas
May 14,2018 10:16:57
Pros:
it is working perfect
Cons:
nothing
Momo
Jan 07,2018 15:34:55
Pros:
Ideal zum Messen der Ladung von Handy Akkus oder anderen USB Geräten
Cons:
Keine
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KWS - V20 USB Voltage Tester

$5.24

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