profdant139 wrote:
Almot, please forgive this foolish question, but why disconnect it? Why not leave the battery on the pulse charge? (This assumes that the pulse function is not harmful to an AGM.)
I'm still hoping that someone really knowledgeable can chime in and tell us authoritatively if the anti-sulphate pulse is nonsense, worse than nonsense, or sense, for both AGMs and wet cells.
(Boy, I really hate this feeling of being ignorant. I am used to being an expert in my narrow field, and it makes me so uncomfortable to be fumbling around in the dark.)
Don't worry, even the engineers of these desulfators are still basically in the dark.
At one time, I met the patent holder of a desulfating battery charger. He had a brochure of 30 or so pages of case studies showing increase in longevity from using his desulfator in fleet based batteries. Yes, I believe the desulfation pulse helps to loosen sulfate from conventional FLA batteries. How much it helps compared to conventional charging schemes, especially those that employ equalization on various schedules, is debatable.
Desulphation circuitry with an AGM battery doesn't make sense to me as the recombinant nature may be skewed and an AGM can actually be left uncharged for an extremely long time without excessive discharge or harm to the battery. I left one 12 V AGM unhooked for 6 months and the SOC had depleted 0.2 DCV during that time.
