[V8] Battery Drain
brett at cloud9.net
Wed Nov 29 13:22:59 EST 2006
On Nov 29, 2006, at 12:15 PM, Kneale Brownson wrote:
> I've had a brand new battery in my new-to-me 200q20v for several
> Worked perfectly for me when I ran the car long enough to drive it
> onto the
> hoist the barn when I bought it. It's been sitting on the hoist
> ever since
> with the negative cable disconnected
> Should a new battery go
> dead sitting like that?
Yep, especially since you didn't charge it (sounds like) when you
bought it. Unless the battery dealer sells a lot of batteries and
that battery was not on the shelf for long, or they're a good dealer
and keep stock on a float charger, it wasn't fully charged.
Lead acid batteries naturally self-discharge, and depending on the
temperature, the rate can vary from "weeks or less" (hot summer) to
~2 months in the cold. Warning: dead batteries FREEZE, as the
freezing point of the electrolyte RISES as the battery discharges! A
battery may LOOK ok, but inside the plates may be damaged from the
Best way to recoup it (supposedly) is to put it on a very slow charge
(half to one amp) at least until it is near 13v; then put it on a
microprocessor-controlled charger on one of its lower power
settings. Ie, charge pattern should match the discharge pattern.
Then leave it on a regulated "maintenance" (float) charger like the
Battery Tender or similar.
More information about the V8