ZinkZ10C@aol.com wrote:
>
> Since the top is sealed
Not true ! All lead-acid car batteries have a vent, with the sole
exception of Optima. If you turn a Delco upside down and then charge
it, you'll find out where the vent is !
> 11.70 0% Usually you can only go here once or twice before the
> battery is junk
The key to recovering a battery from this state is to charge it at a
constant low current. 1 amp is good for car-sized batteries. Batteries
that appear to be completely open (voltage goes to 15v immediately but
battery does not take any current) can frequently be recovered by going
to a higher charge voltage, still with reduced current. I've gone as
high as 50v across a car battery, and successfully brought it "back to
life". Even so, you can expect to lose 20% or more of it's capacity.
Randall
/// triumphs@autox.team.net mailing list
/// To unsubscribe send a plain text message to majordomo@autox.team.net
/// with nothing in it but
///
/// unsubscribe triumphs
///
/// or try http://www.team.net/cgi-bin/majorcool
|