Testing for battery drain.

LarryW

Well-known member
Mar 28, 2002
6,022
746
113
Menomonie, WI.
My engine battery drains nearly dead in about 5 days. Charge it and disconnect from coach and it looses nothing, Hookied up it will go from 13.4v to
11.5v over a 5 day period. What is the best way to test for parasitic drain?
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.
 
Put a test light between the negative battery terminal and the negative
lead. If you have a drain the test light will illuminate. Start pulling
fuses one by one while watching the light. The one(s) that makes the light
dim or go out are your issue.

Sully
Bellevue wa

> My engine battery drains nearly dead in about 5 days. Charge it and
> disconnect from coach and it looses nothing, Hookied up it will go from
> 13.4v to
> 11.5v over a 5 day period. What is the best way to test for parasitic
> drain?
> --
> Larry
> 78 Royale w/500 Caddy
> Menomonie, WI.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
 
> Put a test light between the negative battery terminal and the negative
> lead. If you have a drain the test light will illuminate. Start pulling
> fuses one by one while watching the light. The one(s) that makes the light
> dim or go out are your issue.
>
> Sully
> Bellevue wa
>

>
> > My engine battery drains nearly dead in about 5 days. Charge it and
> > disconnect from coach and it looses nothing, Hookied up it will go from
> > 13.4v to
> > 11.5v over a 5 day period. What is the best way to test for parasitic
> > drain?
> > --
> > Larry
> > 78 Royale w/500 Caddy
> > Menomonie, WI.
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:

That is exactly what I was looking for! Thanks Sully!!
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.
 
Used it myself for the first time on my first GMC. Thank you James Hupy.

Sully
Bellevue wa

> > Put a test light between the negative battery terminal and the negative
> > lead. If you have a drain the test light will illuminate. Start pulling
> > fuses one by one while watching the light. The one(s) that makes the
> light
> > dim or go out are your issue.
> >
> > Sully
> > Bellevue wa
> >

> >
> > > My engine battery drains nearly dead in about 5 days. Charge it and
> > > disconnect from coach and it looses nothing, Hookied up it will go
> from
> > > 13.4v to
> > > 11.5v over a 5 day period. What is the best way to test for parasitic
> > > drain?
> > > --
> > > Larry
> > > 78 Royale w/500 Caddy
> > > Menomonie, WI.
> > > _______________________________________________
> > > GMCnet mailing list
> > > Unsubscribe or Change List Options:
> > >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
>
> That is exactly what I was looking for! Thanks Sully!!
> --
> Larry
> 78 Royale w/500 Caddy
> Menomonie, WI.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>