Review on Switchtec 4.8 Amps Dual USB Rocker Switch Style Charger with Blue Voltmeter for Boats, RZR 900, RZR 1000, Ranger, Mobile Home, RV, Spyders, Maverick, SxS, Golf Cart, Off Road Vehicles, RV, Side by Sides: Efficient Charging Solution for Various Outdoor Vehicles by Bryan Finken

Only the top port charges my Samsung tablet. I don't know why, but he doesn't like the bottom one. Exchanged for another because he thought something was wrong with him, but the second one did the same. CONTINUATION. Now none of the ports are charging my Samsung tablet properly. I also tried different cables. I see a red X over the battery icon on my tablet, indicating that the port is charging slowly at 0.5 amps. Unacceptable.