Review on 🔌 YONHAN Quick Charge 3.0 Dual USB Charger Socket, Waterproof Power Outlet with LED Voltmeter & Wire Fuse DIY Kit - Fast Charging for 12V/24V Car Boat Marine ATV Bus Truck and More by John Bourgeois

USB charging ports are as advertised but if your charging cables are not compatible with this technology you will not see fast charging results. You can easily spend double what this device costs to get the right cables that will allow you to use the fast charging feature. In most cases this doesn't matter much, but be aware that if you expect high accuracy, you will be disappointed. UPDATE: AFTER 3 MONTHS, A CHARGING PORT IS NOT WORKING AND THE VOLTAGE METER IS FLASHING ON AND OFF, BUT EVEN WHEN WORKING, IT FLASHES SO MUCH THAT IT IS IMPOSSIBLE TO DETECT THE NUMBERS. Well, I don't have to say the impossible - yesterday the numbers were clearly visible and read 15.9 volts. I'm not a vehicle electrician, but I think that's at least a few volts lower. DO YOU REALLY WANT TO CHECK THE 1" DIAMETER HOLE IN YOUR FINISHING PLATES FOR A PRODUCT THAT CAN BE LOST AFTER 3 MONTHS?