Review on 🚗 Waterproof Dual USB Car Power Outlet 12V/24V with Quick Charge 3.0, LED Voltmeter – Ideal for Car, Marine, Boat, Motorcycle, Truck, RV and More (Red) by Cody Stroop

I have two complaints... first... although it shouldn't be, since it's only a small power consumer, it drains the car battery so much that there can be starting problems when connecting to the permanent power supply. Tested 3 days in a row, car parked with 13.8 volts on battery... next morning it dropped to 12.3 volts. I unplugged the USB and the next morning the battery voltage was still 13.7 volts. Another annoying thing is the display of volts. At first I thought it was a useful feature, but driving it at night is very distracting. Well done but there are flaws.