Dang! Ran my 6v batteries dead............

Vintage465 wrote:
Twice now I have managed to kill my Interstate 6v batteries twice flat. I am charging them back up now. What kind of damage do you think I may have done to the life span of these dudes?

Depends on what you mean by "flat". Any flooded battery shouldn't be drawn down any more than ~ 50% on any regular basis, say roughly 12 volts for a 12 volt battery and 6 volts for a 6 volt battery. Occasionally a draw down to ~ 30% is acceptable if it can't be avoided but you sure wouldn't want to do that on any regular basis nor draw down any further than that at all. If by "flat" you mean you've drawn down your 6 volt batteries any more than ~ 5.9 volts then chances pretty good they're toast. That apparent recharge you "thought" you did was just phantom, as evidenced by the fact they're "dead" again. Time for new "dudes". :W