I just bought a Trail Lite B+ 211s with 8.1 Chevy engine. This is my fifth motorhome (others range from an old 20' Vagabond, and three Winnegagos, from 19 to 32'. This vehicle is fantastic. I am...
The Parallax is a single stage charger. Its voltage is too low for timely charging, but too high for floating long term.
I have the 7355, which puts out 55 amps. But the voltage is the problem. It only puts out 13.8 volts, and who knows how much lower that is after going through 25' of #6 cable. To charge the battery quickly, it should get 14.4v in the bulk phase. A PD charger will charge the battery from 50% to 90% in a couple of hours or so. The Parallax might take a couple of days. :)