Review on USMEI Voltmeter Quick Charge 3.0 Dual USB Car Charger, 36W QC3.0 USB Adapter + 3A USB Type C Cable for Samsung Galaxy S20/S20+ Ultra S10 S10E S9 S8 Note 10 9 8, Motorola Moto Z/Z2, LG G5/G6/V20/V30 (Black Braided) by Rachel Flores

Just enough to pass by when I'm in a car with the radio on, I can quickly see if my battery is getting low and charge it. If you need an ultra-accurate battery tester, however, this will suffice if you need to watch for significant voltage drops. It has been used on two different cars since 2019 without any problems, the screen is nice and clear, the finish is nice and solid. with some weight. Obviously a fast charger works well with a good charger, I've had issues with some cables but obviously with good quality cables you won't have a problem.