DIYbanter - View Single Post - Leave an unplugged battery charger connected to lead-acid battery?

Tony Hwang

hr(bob) wrote:
On May 15, 5:36 pm, David Nebenzahl wrote:
On 5/15/2009 3:19 PM Red Green spake thus:

"Stormin Mormon" wrote in news:gukmr0
:
The battery chargers I've used, the DC output goes through
diodes. So, discharge isn't an issue.
From what I recall from long ago, all diodes have a leakage current rating.
Whether it's significant in this case I don't know.
They all have a leakage current rating; the leakage is very, very small.

FAIK, the old Si/Ge diodes may be obsolete in today's electronics.
Si/Ge? You mean one or the other; modern diodes are all silicon, except
for a few small-signal ones (1N34, etc.). Not used in battery chargers,
that's for sure.

And of course before that there were selenium and copper-oxide
rectifiers, both long obsolete.

--
Found--the gene that causes belief in genetic determinism

The reverse leakage should be so small as to be insignificant compared
to the battery self-discharge.
Hi.
Of course battery internal resistance is a durrent path for discharge.