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Re: [GMCnet] replacement battery questions [message #323520 is a reply to message #323517] Thu, 07 September 2017 13:37 Go to previous messageGo to previous message
Ken Henderson is currently offline  Ken Henderson   United States
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma:
Senior Member
Deb,

DEFINITELY treat the two 6 VDC batteries as one 12 VDC -- aside from
maintenance, just forget those two jumpered terminals exist -- as if they
were inside one big battery case, which is, in effect, what you have.
Incidentally, using a 1 gauge jumper with 4 g. elsewhere would in no way
(other than cost) be a bad thing. Considering the length, even a 4 g. with
1 g. elsewhere wouldn't be very bad -- since it's not a starting battery,
you're never going to approach full current load anyway.

Good luck getting your OLD Onan serviced by Cummins. Unless they happen to
have someone OLD working there, you'll be lucky if they know anything about
it. Previous reports have not, in general, be favorable.

Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton,
​Troy-Bilt APU, ​
etc., etc., etc.
www.gmcwipersetc.com

On Thu, Sep 7, 2017 at 2:08 PM, Deb McWade wrote:

> Had the neighbours old 12V marine battery on the charger for over 48 hrs.
> This morning I checked in and it has reached the 75% mark (haven't checked
> the voltage yet) on the charger (btw, charger runs at 1.1 amps) - but I
> heard a faint sizzling/crackling sound. Not knowing what it might be, I
> have
> disconnected it! Sounded like someone was frying bacon in there somewhere.
>
> In the meantime, have picked up (figuratively) 2 6V 230 AmpHr / 448 minute
> reserve golf cart batts - didn't realize they were that big! - and will be
> installing everything when I get back tonight. Didn't pick up a bridging
> cable yet because I wasn't sure if my PO had 1 or 4 gauge cables back there.
> Knowing him, it was possible he used 1 gauge and there was no point
> getting a 4 gauge bridge.
> Also need to sort out a tray of some sort.
>
> Question - if I have to put a series system like that on a charger - do I
> approach it like one big 12V battery and go from the + on one to the - on
> the other and set the charger for a norm 12V? Or disconnect the bridge
> and charge them individually as 6V?
>
>
> Got the adapters for the starter cables and that is going in as well. At
> least if the fires come my way, I will be able to start up and pull out.
>
> Next step - bringing her in to Cummins next Friday to have them do a
> troubleshoot on the Onan and maybe get that happening, so by spring, I
> might have
> a snowball's chance at going somewhere :)
> --
> Deb McWade
> "Li'l Sister"
> '77 Kingsley, 403, EBL EFI;
> TZE167V101404
> It's Bigger on the Inside!
>
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
 
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