USB Volatage/Amps Power Meter, Digital Tester Multimeter Test Speed of Charger, Cables, Computer, Power Bank

• 【Wide Range of Applications】USB power meter tester can be connected to the charging adapter, and can also connect the charging cable plug, easy to find digital devices charging problem existed and protect the electronic equipment, perfect measurement for the tablet, cell phone batteries, rechargeable treasure, 5V routers and any other 5V USB digital device operating current, voltage, and battery capacity.
• 【Accurate Measurement】Accuracy: plus or minus 1%, accurate measurement data. Input Voltage: 3V-15V, Voltage Resolution: 0.01V, Test Current: 0.05A-3.50A, Current Resolution: 0.01A, Capacity Range: 0-19999mAH
• 【Data Storage】 High voltage or low voltage will be alarm, LCD screen arrow, the backlight LED will alarm prompts through flash. Press the button LED screen will be light on 30S.
• 【Easy to use & Carry】With LCD screen, easy to see the current and voltage of the devices.Smallsize , no power , and other ancillary equipment, plug and play also detect USB charger output voltage and curre.

Features: Input voltage: 3V-7V (can be within 12V) Voltage resolution: 0.01V Test current: 0.05A-3.50A Current resolution: 0.01A Capacity range: 0-19999mAH Accuracy: plus or minus 1% Line loss: about 0.1 ohms Test content: Battery voltage, current, discharge capacity (a total of 10 sets of data) Voltage and current measurement: Plug the USB male into a 5V charger, and plug the female into a mobile phone or other devices to directly read the voltage and current parameters. Test the output capacity and efficiency of the mobile power supply: First, connect the device to the mobile power supply, turn on the mobile power supply, press and hold the button until the capacity data returns to zero, insert the phone multiple times to charge until the mobile power supply runs out and automatically shuts down. The next time the machine is turned on, the displayed capacity is the mAH output of the mobile power supply. Note that this mAH is much smaller than the nominal mAH, with output mAH * output voltage 5V/battery mAH * battery voltage 3.7V=mobile power efficiency. Data switching: Click the button to switch to the next set of data, and double-click the button to switch to the previous set of data. Package Included: 1 x USB Power Current Voltage Tester