But here is my question. Is there any significant damage done by leaving a normal battery charger on overnight, where it might get to zero amps but stay attached for a few hours? This is not a fancy battery charger that shuts off or kicks into trickle mode or such.
what can happens is the battery gets warm (too warm) and as it charges or over charges it can boil off the water ( electrolyte) this electrolyte is acid and can cause damage ti metal surfaces big time basic rule here is, car sits for maybe 2 weeks charge battery for 1 hr max if you experience slow cranking remember too much of any thing can not help too much is ...too much. and really i never ever liked leaving any thing like a battery charger plugged in and unattended especially for any extended period of time collins 1985 500 sec I did leave it on overnight routinely last winter with no apparent damage, but am curious about the long term impact of doing this. We're talking in my case one of the Interstate Battery mega-mothers under the hood, not a cheap off-brand battery. Don
