The battery chargers I've used, the DC output goes through
diodes. So, discharge isn't an issue.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"BetaB4" wrote in message
...
I posted a question in the newsgroup "rec.boats" about
recharging a
lead-acid battery for an electric boat motor after returning
from a
boating/fishing trip. The original question was about
whether it's okay to
leave the battery charger on for a few days to a week. I
found out that,
unless I have the more modern automatic type of battery
charger, that is a
bad idea -- due to overcharging the battery.

Then someone suggested just plugging the battery charger
into a timer and
setting the timer to turn the power off to the battery
charger after say 12
hours.

My question now is,

"If I do the timer idea, could the fact that the battery
charger will still
be set to "ON", and will still be connected to the battery
after the timer
cuts power to the battery charger, cause the battery to
discharge and drain
back through the battery charger?"

I tried a Google search but didn't find too much info that I
could use.