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product description:
This lovely KCX-017 USB current and voltmeter can instantly display USB charging current and voltage. With it, you can quickly understand the current and voltage stages of devices such as USB cables, USB wall chargers, car chargers or solar panel chargers, giving you the fastest charging performance! Flexible and easy to use.
1) It can test the current and voltage of mobile phones, mobile power supplies, etc.
2) With USB interface and micro USB interface, it is convenient to test equipment.
3) With LCD screen, the current and voltage of the device can be seen at a glance.
4) Press the small circle button, the data is zero, then you can test the next data.
Function Description:
1) Voltage warning: When the voltage is too high or too low, the backlight LED will flash, and the alarm will prompt. Press the button and the LED will be on for 30S.
2) Dual input: dual input mode of USB male and Micro USB interface, can detect the quality of Micro USB cable
3) Current calibration: Data calibration function settings: one electronic load meter and one constant current source. The constant current source is adjusted to 8.5V and above and below 10V (9V is recommended), and the electronic load is set to CC mode (constant current mode), 3A, 2A, 1A, 0.3A four currents are calibrated respectively. Take 3A as an example: During 3A calibration: the electronic load is set to constant current mode 3A, the current of the LCD screen of the fuel gauge will be automatically and slowly calibrated (about 10S), you can see that the current of the LCD screen will change, turn off the electronic load after calibration Data is automatically protected.
🔥🇮🇹Luca🇮🇹🔥
Reviewed in Italy on March 7, 2025
Eccellente per misurare tempi di ricarica, voltaggio e capacità di carica di alimentatori o capacità reale in mah di un powerbank, utile anche per valutare qualità dei cavi usbUtile la resistenza di carico inclusa, durante i test chiaramente la resistenza scalda molto quindi occorre maneggiare con cura.
Ramon Sole
Reviewed in Spain on February 7, 2025
Herramienta completa para testear cargadores cables y baterías.
users
Reviewed in Japan on September 9, 2024
USBの電流値は1割くらい多めに表示されました。商品説明に「USB抵抗DC電子負荷」とありますがふつうの抵抗です。当然、抵抗は発熱します。1A負荷で表面温度が100℃以上になります。2A負荷はやばいです。でも、この値段ならば納得というものです。
Kunde
Reviewed in Germany on August 9, 2024
Ich weiss nicht wie genau das Teil wirklich misst, habe es auch nur verwendet um den besten Winkel zur Sonne für mein Handy-Solarladegerät zu ermitteln, funktioniert hierfür wunderbar. Es ist noch ein Lastwiderstand dabei, so kann man die Ladeleistung z.B. einer Powerbank beurteilen.
DM
Reviewed in Canada on December 24, 2024
When measuring capacity of battery at 2Ah (really benign consumption) the resistors provided my infrared thermometer got up to over 360 degrees celsius. Look at the photo posted. Very dangerous. I put it on a piece of metal, but if you plan to put it on combustible surface, like desk, plastic, expect a fire. I may return it for a refund. Don't recommend it. If you plan to keep it i recommend some ventilation. My fan blowing air in resistors lowered temperature to about 250 degrees celsius.
Anonymous
Reviewed in the United Kingdom on October 26, 2023
displays 7v at USB 5 (tested with another tester). ca 10-20% accuracy of current measurement. The dongle is good idea, also approximate specs. Also it heats up quickly, and hard to remove if not careful.
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