Vender Meter Ammeter Tool USB Current Voltage Tester Doctor Charger Capacity G9P0 al mejor precio

kws-v20 size: length 59mm (with usb7 3mm) *width 23mm*height 13.5mm voltage: input/output voltage: 3-9v, voltage resolution: 0. 01v current: input/output current: 0-3a, current resolution: 0.01a accuracy: plus or minus 1% line loss: about 0.1 ohm weight: 20g introduction in-input terminal is connected to the output port of the charger rtz-clear key, the screen display will be cleared after 3-5 seconds out- the usb port where the output terminal is connected to the data line input voltage display window (3-9v) accuracy +-1% charging current display window (0-3a) accuracy +1% battery capacity display window (0-99999mah) working time display window (0-99h) in minutes working time and empty capacity display after power off, memory function kws-v21 size: length 59mm (with usb7 3mm) * width 23m * height 13. sm voltage: input/output voltage: 4-20v, voltage resolution: 0. 01v current: input/output current: 0-3a, current resolution: 0. 01a accuracy: plus or minus 1% line loss: about 0.1 ohm weight: 20g introduction in-input terminal is connected to the output port of the charger reset- reset button, the screen display will be reset after 3-5 seconds out- the usb port where the output terminal is connected to the data line input voltage display window (4-20v) accuracy +-1% charging current display window (0-3a) accuracy +-1% battery capacity display window (0-99999mah) working time display window (0-99h) in minutes working time and empty capacity display after power off, memory function the package includes: 1*voltmeter hello, guys, thank you for visiting my store. Dear buyer,Welcome to our store. Thank you for your attention, Thank you for your support!Welcome to buy from us!