i have 3 sulfated batteries. I've tried something i read on web that replacing the electrolyte with epsom salt diluted with distilled water and recharged it will resolve the sulfation problem of lead acid batteries. In fact i tried it, i bought two kilos of epsom salt (magnesium sulfate) at alyson chem, for 22 pesos per kl only. i charged it, then discharged it, then recharged but in vain, nagsayang lang ko ng pagod. Maybe somebody out there has tried it with success, baka wrong way lang gawa ko. or may alam kayong paraan, na mai share.