Home » Public Forums » GMCnet » [GMCnet] Batteries for "late" 1976
| [GMCnet] Batteries for "late" 1976 [message #150113] |
Sat, 19 November 2011 11:37  |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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It appears that the large heavy battery behind
my Onan is likely kaput as it does not seem to
take and/or retain a charge.
I have been unable to find a reference that
identifies this monster.
Is this what is referred to as a 6D or 8D?
I have looked in sections 6Y and 12 of my
maintenance manual, but have not found the
information I need.
TIA
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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| Re: [GMCnet] Batteries for "late" 1976 [message #150115 is a reply to message #150113] |
Sat, 19 November 2011 12:36  |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Mac
That is probably a 4D battery. width 8 3/4", height 9 13/16", length 20 3/4"
It is actually a truck battery. I believe the D meant that is was for diesel starting purposes.
This is NOT a deep discharge battery so they generally don't last for a lot of total depletion and recharges.
Most of us have replaced it with two 6 volt golf cart batteries wired in series (the positive terminal of one connected to the negative terminal of the other).
This will give several years of good use with a lot of reserve capacity.
This is cheaper and a far better setup.
Emery Stora
On Nov 19, 2011, at 10:37 AM, D C *Mac* Macdonald wrote:
>
> It appears that the large heavy battery behind
> my Onan is likely kaput as it does not seem to
> take and/or retain a charge.
>
> I have been unable to find a reference that
> identifies this monster.
>
> Is this what is referred to as a 6D or 8D?
>
> I have looked in sections 6Y and 12 of my
> maintenance manual, but have not found the
> information I need.
>
> TIA
>
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> ~~ ~ D C "Mac" Macdonald ~ ~~
> ~ ~ Amateur Radio - K2GKK ~ ~
> ~ ~ USAF and FAA, Retired ~ ~
> ~ ~ ~ Oklahoma City, OK ~ ~ ~
> ~~ ~ ~ "The Money Pit" ~ ~ ~~
> ~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
> ~ www.gmcmhphotos.com/okclb ~
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>
> _______________________________________________
> GMCnet mailing list
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| Re: [GMCnet] Batteries for "late" 1976 [message #150116 is a reply to message #150113] |
Sat, 19 November 2011 12:41 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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| k2gkk wrote on Sat, 19 November 2011 09:37 |
It appears that the large heavy battery behind
my Onan is likely kaput as it does not seem to
take and/or retain a charge.
I have been unable to find a reference that
identifies this monster.
Is this what is referred to as a 6D or 8D?
I have looked in sections 6Y and 12 of my
maintenance manual, but have not found the
information I need.
TIA
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
That is how it came stock in 1976. If it were me I would replace that monster with 2 golf cart batterys.
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Roy Keen
Minden,NV
76 X Glenbrook
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| Re: [GMCnet] Batteries for "late" 1976 [message #150117 is a reply to message #150113] |
Sat, 19 November 2011 12:58 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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If it is generator only, any 12v car battery that will fit in the bracket will work
Sully
77 royale
------Original Message------
From: D C *Mac* Macdonald
Sender: gmclist-bounces@temp.gmcnet.org
To: gmclist@temp.gmcnet.org
ReplyTo: gmclist@temp.gmcnet.org
Subject: [GMCnet] Batteries for "late" 1976
Sent: Nov 19, 2011 9:37 AM
It appears that the large heavy battery behind
my Onan is likely kaput as it does not seem to
take and/or retain a charge.
I have been unable to find a reference that
identifies this monster.
Is this what is referred to as a 6D or 8D?
I have looked in sections 6Y and 12 of my
maintenance manual, but have not found the
information I need.
TIA
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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Sent from my Verizon Wireless BlackBerry
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: [GMCnet] Batteries for "late" 1976 [message #150126 is a reply to message #150115] |
Sat, 19 November 2011 14:40 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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Thanks, Emery, and others who responded.
The measurements you quoted were pretty much accurate.
I seem to remember folks talking about battery trays here.
Is there some sort of sliding/rolling tray to install in
the hole where that large single battery now resides?
Did/does Ragusa make such an item? I don't think I want
to try to "rassle" two golf cart batteries into the space
while they are connected in series.
Do folks use battery boxes with covers to prevent short
circuits that might occur if rear end bounces on rough
roads or some sort of "accident."
Do the make "sealed" or "maintenance-free" golf cart
batteries?
Is there a consensus on best place to get the golf cart
batteries? No Costco around here; only Wal-Mart and Sam's
other than specialty battery shops.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> From: emerystora@mac.com
> Date: Sat, 19 Nov 2011 11:36:26 -0700
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] Batteries for "late" 1976
>
> Mac
> That is probably a 4D battery. width 8 3/4", height 9 13/16", length 20 3/4"
>
> It is actually a truck battery. I believe the D meant that is was for diesel starting purposes.
>
> This is NOT a deep discharge battery so they generally don't last for a lot of total depletion and recharges.
>
> Most of us have replaced it with two 6 volt golf cart batteries wired in series (the positive terminal of one connected to the negative terminal of the other).
> This will give several years of good use with a lot of reserve capacity.
> This is cheaper and a far better setup.
>
> Emery Stora
>
>
>
> On Nov 19, 2011, at 10:37 AM, D C *Mac* Macdonald wrote:
> >
> > It appears that the large heavy battery behind
> > my Onan is likely kaput as it does not seem to
> > take and/or retain a charge.
> >
> > I have been unable to find a reference that
> > identifies this monster.
> >
> > Is this what is referred to as a 6D or 8D?
> >
> > I have looked in sections 6Y and 12 of my
> > maintenance manual, but have not found the
> > information I need.
> >
> > TIA
> >
> > ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> > ~~ ~ D C "Mac" Macdonald ~ ~~
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| Re: [GMCnet] Batteries for "late" 1976 [message #150135 is a reply to message #150126] |
Sat, 19 November 2011 16:16 |
 |
ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
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Senior Member |
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I love my plastic battery tray. Its the same as the Jim K sells, but I don't have the hold-down bracket. <http://appliedgmc.com/prod.itml/icOid/457>
Larry Davick
Sent from my iPad
On Nov 19, 2011, at 12:40 PM, D C *Mac* Macdonald <k2gkk@hotmail.com> wrote:
>
> Thanks, Emery, and others who responded.
>
> The measurements you quoted were pretty much accurate.
>
> I seem to remember folks talking about battery trays here.
> Is there some sort of sliding/rolling tray to install in
> the hole where that large single battery now resides?
>
> Did/does Ragusa make such an item? I don't think I want
> to try to "rassle" two golf cart batteries into the space
> while they are connected in series.
>
> Do folks use battery boxes with covers to prevent short
> circuits that might occur if rear end bounces on rough
> roads or some sort of "accident."
>
> Do the make "sealed" or "maintenance-free" golf cart
> batteries?
>
> Is there a consensus on best place to get the golf cart
> batteries? No Costco around here; only Wal-Mart and Sam's
> other than specialty battery shops.
>
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> ~~ ~ D C "Mac" Macdonald ~ ~~
> ~ ~ Amateur Radio - K2GKK ~ ~
> ~ ~ USAF and FAA, Retired ~ ~
> ~ ~ ~ Oklahoma City, OK ~ ~ ~
> ~~ ~ ~ "The Money Pit" ~ ~ ~~
> ~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
> ~ www.gmcmhphotos.com/okclb ~
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>
>
>
>
>> From: emerystora@mac.com
>> Date: Sat, 19 Nov 2011 11:36:26 -0700
>> To: gmclist@temp.gmcnet.org
>> Subject: Re: [GMCnet] Batteries for "late" 1976
>>
>> Mac
>> That is probably a 4D battery. width 8 3/4", height 9 13/16", length 20 3/4"
>>
>> It is actually a truck battery. I believe the D meant that is was for diesel starting purposes.
>>
>> This is NOT a deep discharge battery so they generally don't last for a lot of total depletion and recharges.
>>
>> Most of us have replaced it with two 6 volt golf cart batteries wired in series (the positive terminal of one connected to the negative terminal of the other).
>> This will give several years of good use with a lot of reserve capacity.
>> This is cheaper and a far better setup.
>>
>> Emery Stora
>>
>>
>>
>> On Nov 19, 2011, at 10:37 AM, D C *Mac* Macdonald wrote:
>>>
>>> It appears that the large heavy battery behind
>>> my Onan is likely kaput as it does not seem to
>>> take and/or retain a charge.
>>>
>>> I have been unable to find a reference that
>>> identifies this monster.
>>>
>>> Is this what is referred to as a 6D or 8D?
>>>
>>> I have looked in sections 6Y and 12 of my
>>> maintenance manual, but have not found the
>>> information I need.
>>>
>>> TIA
>>>
>>> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>>> ~~ ~ D C "Mac" Macdonald ~ ~~
>
> _______________________________________________
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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| Re: [GMCnet] Batteries for "late" 1976 [message #150140 is a reply to message #150117] |
Sat, 19 November 2011 16:57 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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It is not the generator only starting battery. On a 76 GM fitted coach that is the house 12 DC battery supply.
Sam Club has the Golf cart batteries.
I also have the plastic tray that Jim now sells. I do not have the roller assembly that he sells attached to the tray. It works just fine without the rollers. I only use it once a year to check the levels.
The Ragusa aluminum tray tends corrode rather quickly from the battery acid and fumes. It becomes impossible to pull out. Call Jim K. He has the best solution for you for your battery tray. Go to Sams club in the spring for batteries. They will have a pallet of fresh 6 volt golf cart batteries sitting there. Those things weigh about 75 pounds a piece.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Batteries for "late" 1976 [message #150144 is a reply to message #150142] |
Sat, 19 November 2011 17:11 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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You do not have to slide the tray all the way out to check the levels. If you have the tray that Jim sells with the rollers on the side you can just pull out without any additional support. Since mine is not attached on the sides, I just pull it out about 2/3 of the way and support it on a stack of 2x4 cut offs I have around that are about 6 inches long.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Batteries for "late" 1976 [message #150152 is a reply to message #150113] |
Sat, 19 November 2011 18:06 |
 |
Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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| k2gkk wrote on Sat, 19 November 2011 12:37 |
It appears that the large heavy battery behind my Onan is likely kaput as it does not seem to take and/or retain a charge.
I have been unable to find a reference that identifies this monster.
Is this what is referred to as a 6D or 8D?
I have looked in sections 6Y and 12 of my maintenance manual, but have not found the information I need.
TIA
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
|
Mac,
Some of your questions have been answered very effectively, but I would like to fill in some information that may be helpful and other may just be interesting.
The two common large batteries available these days are the 4D and 8D. They look almost identical, but the 4D is 100# and the 8D is 165#. While both are available through the marine trades as a deep cycle version, they are expensive and difficult to manage.
I can not speak for the sliding battery tray, but if I had a 26, I would have one as it is the only way to properly maintain the batteries.
The Sam's golf cart batteries that are typically available are seem to be of reasonable quality, and the price is about as good as you can get. On the other hand, if you want as good as you can get, look up Trojan. T-105 or T-125 are similar to those at Sam's with the T-105 a package match for the GC-2 or EGC-2 from Sam's. The T-125 is a little taller and I am not positive that it will fit in the tray.
There are three kinds of lead/acid batteries; Conventional, Gel Cell and AGM. Most of what you see as "sealed" are just conventional LA batteries that cannot be opened for normal maintenance. I do not know if normal construction golf cart batteries exist as maintenance proof, but they do exist as both Gel and AGM. Check prices before you consider purchasing either of these.
If you have a Progressive Dynamics or other good multi-stage converter, you will not have to add water to the batteries on any regular basis, but you will still have to check that level very regularly or risk losing the investment.
If you can put another question together, come back an I will try to fill it in.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] Batteries for "late" 1976 [message #150441 is a reply to message #150152] |
Tue, 22 November 2011 12:04 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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I went by Sam's yesterday to check on batteries.
They have "Eveready" brand 2CG (105 Amp) at just
under $79 and 8CG (110 Amp) at just under $89.
They are virtually the same size about 7x10x10
and only have different terminal arrangements
as far as I can tell. I believe the 2CG terminal
setup would probably be better suited for adapting
to my existing cabling.
Before I do anything, I'm going to try to access
the existing (apparent) 4D and top up the cells
with distilled water. They may be pretty dry as
I could hear bubbling/hissing after charge had
been applied for a considerable time. They may
be totally kaput, but I'll give a try at bringing
them back to life.
I do have a PD9620 to install when the weather
dries up and warms up a bit.
Thanks to all for the assistance.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> To: gmclist@temp.gmcnet.org
> From: matt7323tze@gmail.com
> Date: Sat, 19 Nov 2011 18:06:59 -0600
> Subject: Re: [GMCnet] Batteries for "late" 1976
>
>
>
> k2gkk wrote on Sat, 19 November 2011 12:37
> > It appears that the large heavy battery behind my Onan
> > is likely kaput as it does not seem to take and/or retain a charge.
> >
> > I have been unable to find a reference that identifies this monster.
> >
> > Is this what is referred to as a 6D or 8D?
> >
> > I have looked in sections 6Y and 12 of my maintenance manual, but
> > have not found the information I need.
> >
> > TIA
> >
> > ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> > ~~ ~ D C "Mac" Macdonald ~ ~~
>
>
>
> Mac,
>
> Some of your questions have been answered very effectively, but I would like to fill in some information that may be helpful and other may just be interesting.
>
> The two common large batteries available these days are the 4D and 8D. They look almost identical, but the 4D is 100# and the 8D is 165#. While both are available through the marine trades as a deep cycle version, they are expensive and difficult to manage.
>
> I can not speak for the sliding battery tray, but if I had a 26, I would have one as it is the only way to properly maintain the batteries.
>
> The Sam's golf cart batteries that are typically available are seem to be of reasonable quality, and the price is about as good as you can get. On the other hand, if you want as good as you can get, look up Trojan. T-105 or T-125 are similar to those at Sam's with the T-105 a package match for the GC-2 or EGC-2 from Sam's. The T-125 is a little taller and I am not positive that it will fit in the tray.
>
> There are three kinds of lead/acid batteries; Conventional, Gel Cell and AGM. Most of what you see as "sealed" are just conventional LA batteries that cannot be opened for normal maintenance. I do not know if normal construction golf cart batteries exist as maintenance proof, but they do exist as both Gel and AGM. Check prices before you consider purchasing either of these.
>
> If you have a Progressive Dynamics or other good multi-stage converter, you will not have to add water to the batteries on any regular basis, but you will still have to check that level very regularly or risk losing the investment.
>
> If you can put another question together, come back an I will try to fill it in.
>
> Matt
> --
> Matt & Mary Colie
> '73 Glacier 23 Chaumière (say show-me-air) Just about as stock as you will find
> SE Michigan - Twixt A2 and Detroit
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| Re: [GMCnet] Batteries for "late" 1976 [message #150468 is a reply to message #150113] |
Tue, 22 November 2011 19:49 |
 |
RF_Burns
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
Karma: 3
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Senior Member |
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In the two-way radio business we use sealed AGM batteries as power backups at tower sites, usually 100 amp/hr. Once they are a few years old and drop below 80% they get replaced. I put one of the rejects in the Murray in 2008 and it needs to be replaced next spring. It still will run everything OK including the new 120V fridge but by the morning in Camp Wally Mart the fridge has a hard time starting. These are not the cheapest batteries, but they are no maintenance.
Not sure how long they would last from new. but I will replace the single 12v 100 A/hr with 2 units in parallel... just cause to me they are $0.00
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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