Review on ⚡️ Waterproof Metal Dual USB Car Charger Socket with Voltmeter & Switch - Fast Charge 36W Power Outlet for Car, Boat, Marine, RV, ATV, Truck, and More - Quick Charge 3.0 Technology Included by William Gildea

Charges quite well. One has a faulty volt meter. One of the little dashes in the number isn't lit, but I can still tell which number is supposed to be displayed. Also, the tabs for the lock nut don't fit the full length of the unit. So make sure the material you are installing it from is 1/2 inch or less thick. I bought these for a caravan and had to improvise a few things. The on/off buttons are nice and they certainly do their job. charge things.