Solar for keeping batteries topped off.

Thanks West and Don for your explanation of the chemical process. As an "average Joe user" that dry camps 95 percent of the time wth an old MH I just use a 40 amp B&D charger to recharge my 2 6v GC batteries then float the batteries for a couple of days with my Magnatec charger that charges at 13.2 v then disconnect until I go camping again. When ready to camp again I will float a couple of more days and repeat the process. I find that a few days charging with the Magnetec after the smart charger says full will add a few days of dry camping before batteries reach 50 percent SOC. For longer storage I recharge after a 5 percent drop. I always thought that shallower discharges would cause less plate shedding and that constant charging even at a low voltage causes a small amount of shedding. I guess there is a fine line between shedding and sulfation.