I don't use it on my car. It's in my camper trailer (100Ah deep cycle gel battery) which I charge with a solar panel system (200W per controller connected to the battery). In this capacity he is excellent. I'm not sure about the percentages, but the volts are correct. The historical data really helped me to better understand how the system charges and discharges during the day and night. I was so pleased with it that I have ordered two more for my two shed off grid solar/wind systems.
Vgate ICar Pro Bluetooth 3.0 OBD2 Code Reader OBDII Scanner Scan Tool Car Fault Diagnostic Check Engine Light For Torque Android
22 Review
eTORK 3/8-Inch Drive "Click Style" Electronic Torque Wrench: Precise Torque Control (25-250 In. lbs., 2-20 ft.-lb.)
12 Review
MUCAR CDL20 OBD2 Scanner - Check Engine Code Reader And Diagnostic Scan Tool For All OBD II Protocol Cars Since 1996, With O2 Sensor, EVAP System, And Smog Test Functions
23 Review
Autoscanner for car diagnostics Rokodil ScanX Pro, OBD2 scanner
29 Review