Recharging starting battery

[tom geiger]

I know I was told I could charge my starter battery from my isolator, just don't remember which post on there I clamp to while I'm plugged in?

Thanks in advance!
Tom
76 Eleganza 2
KCMO

 

[Ken H.]

Tom,

Clipping across the OUTER two terminals of the isolator, or the two large
terminals on the boost relay, will connect the chassis and starting
batteries directly in parallel.

The caution to know is that either battery, if discharged, will take the
other one right along with it. If you're boondocking and use up "all" of
"the" battery, you'll have to jump start the coach. You MAY have enough
energy let you start the Onan, which will then allow your converter to
eventually recharge both batteries (while they're still connected).

HTH,

Ken H.

> I know I was told I could charge my starter battery from my isolator, just
> don't remember which post on there I clamp to while I'm plugged in?
>
> Thanks in advance!
> Tom
> 76 Eleganza 2
> KCMO
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

 

[Ken B]

While jumpering the top and bottom terminals. One word work of caution is in order. Use a small gauge jumper. (A 18 or 16 gauge Jumper is all that I
needed to carry charging current which will be low. If one of the batteries were to internally short, having a heavy wire will allow high current to
flow between the batteries and usually blow up one of them. A thin jumper on the other hand will simply burn in half like a fuse and protect the two
batteries. I have one of those jumper wires hanging unattached under the hood near the isolator just in case I need it. I have never needed it in 15
years but sometimes I install it when the coach is parked for months over the winter. I do not remember if I put it on this winter not.
--
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

 

[Gene Fisher]

Or use a combiner

> While jumpering the top and bottom terminals. One word work of caution is
> in order. Use a small gauge jumper. (A 18 or 16 gauge Jumper is all that I
> needed to carry charging current which will be low. If one of the
> batteries were to internally short, having a heavy wire will allow high
> current to
> flow between the batteries and usually blow up one of them. A thin jumper
> on the other hand will simply burn in half like a fuse and protect the two
> batteries. I have one of those jumper wires hanging unattached under the
> hood near the isolator just in case I need it. I have never needed it in 15
> years but sometimes I install it when the coach is parked for months over
> the winter. I do not remember if I put it on this winter not.
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://bdub.net/gmcmotorhome.info/
Alternator Protection Cable
http://bdub.net/gmcmotorhome.info/APC.html

 

[john phillips]

I put the jumper in to keep my batteries charged if when I am not going to
use the coach for a while and plug the coach in. My problem is that my
PD9270 shorted out and the light existence cord I used acted like a fuse
more than 2 months after I plugged it in last time. It did not trip the 20
amp breaker in my main panel or the 15 amp breaker feeding the PD9270. Now
the chassis battery and 3 house batteries are 0 volts. The Generator
starting battery is ok. That is the only battery I did not replace a year
ago.
John Phillips
75 Avion
Sacramento Ca.

> Or use a combiner
>
>
>
>
>

>
> > While jumpering the top and bottom terminals. One word work of caution
> is
> > in order. Use a small gauge jumper. (A 18 or 16 gauge Jumper is all
> that I
> > needed to carry charging current which will be low. If one of the
> > batteries were to internally short, having a heavy wire will allow high
> > current to
> > flow between the batteries and usually blow up one of them. A thin
> jumper
> > on the other hand will simply burn in half like a fuse and protect the
> two
> > batteries. I have one of those jumper wires hanging unattached under the
> > hood near the isolator just in case I need it. I have never needed it
> in 15
> > years but sometimes I install it when the coach is parked for months over
> > the winter. I do not remember if I put it on this winter not.
> > --
> > Ken Burton - N9KB
> > 76 Palm Beach
> > Hebron, Indiana
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
> --
> Gene Fisher -- 74-23,77PB/ore/ca
> “Give a man a fish; you have fed him for today --- give him a URL and
> -------
> http://bdub.net/gmcmotorhome.info/
> Alternator Protection Cable
> http://bdub.net/gmcmotorhome.info/APC.html
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--

*John Phillips*

 

[john r. lebetski]

Your start battery already charges through your isolator. You mean which terminal to clip on a trickle or something? Just trace the wires. Not a
wise answer-- easy to follow
--
John Lebetski
Woodstock, IL
77 Eleganza II

 

[d c *mac* macdonald]

If you have TWO "trickle" chargers (i.e., Battery Minder or Battery Tender) clip one charger on each terminal of the isolator. If the isolator is good, your house and vehicle batteries SHOULD be kept in good condition as long as there is no parasitic hidden drain on those batteries.

D C "Mac" Macdonald​
Amateur Radio K2GKK​
Since 30 November '53​
USAF and FAA, Retired​
Member GMCMI & Classics​
Oklahoma City, OK​
"The Money Pit"​
TZE166V101966​
'76 ex-Palm Beach​
k2gkk + hotmail dot com​

________________________________
From: Gmclist on behalf of John R.Lebetski
Sent: Tuesday, January 22, 2019 16:10
To: gmclist
Subject: Re: [GMCnet] Recharging starting battery

Your start battery already charges through your isolator. You mean which terminal to clip on a trickle or something? Just trace the wires. Not a
wise answer-- easy to follow
--
John Lebetski
Woodstock, IL
77 Eleganza II

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[tom geiger]

I just remembered I had bought a Combiner several years back, and I'll just need to figure out where I put it. Sounds like the safer way to go. I do
have a small gauge jumper wire I store near the battery, just have not used it for awhile.

So its on the hunt for where I stashed it.

Thanks,
Tom