While I know that on many NON rv related forums and even by a portion on them, the trickle charge to full mindset is always viewed as best for recovering a battery, I am not in that camp at all.
If the battery is sulfated/ capacity compromised with somewhat hardened sulfate, and discharged, I feel that high amp rates will heat the plates and perhaps allow the sulfate to be redissolved back into the electrolyte.
I am of the mindset that one does not force a marathon runner or sprinter to breathe through a cocktail straw, but give them a row of macdonalds straws to suck as much as they can.
My experience with Desulfating pulse chargers, limited as it might be, and and marketing gimmicks in general, is that it is just another way of separating consumer from their money. And somehow making them feel good about it. All this seems to require is marketing material with lots of colors, outrageous claims, and blinking lights, preferably green.
Helps too if the plastic casing is sexy.
