A flooded lead-acid battery will self-discharge at 4% per week even if you disconnect it. AGM self-discharges at about 1% per month. The flooded lead-acid also has only a 50% Depth of Discharge, whereas AGM can go down 80% DoD. Essentially, the flooded batteries kill themselves faster and they can't go down as far before they're down for the count. The only way to keep a flooded lead-acid battery alive is to keep it on life support all the time. What they're good for is cheap initial cost, repeat sales, and sales of chargers, tricklers, jumper cables, dual-battery isolators, disconnect switches, and booster packs, as well as roadside assistance service subscriptions and tow services. $$$$$
Last edited by Western_Juniper; 11/26/20.
