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| Re: Does engine charge house batteries? [message #359728 is a reply to message #359726] |
Sat, 24 October 2020 10:24   |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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Aaron,
What year and model coach?
It was supposed to....
It sounds a lot like something is wrong.
Do you have a meter?
Do you see changing voltage when the main engine is running?
Have you checked out the isolator?
You say you have two pair of 12V deep cycles?
Two back by the Onan and where are the other two?
This is an unusual installation, you will need to tell us a lot more about it.
I hate to tell you this, but Lead/Acids do not play nicely in parallel. You will never get full capacity out of them.
Your Onan "still" does not run....
What doesn't it do?
Does it make noise but not electricity?
Does it crank but not fire up?
Does it not crank at all?
You have been here a while, and this is a very supportive and helping community. It will help to help you better if you fill in a sigfile with a real name because we like to know we have met when we do meet. A short bit about the coach like year, model and including major mods. A geographic location would be nice, but I did remember that you are full-timing. That may be a little difficult, but if you listed when you are at the top when you write, then if there is someone in striking range that can help, he mike be motivated to do so.
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: Does engine charge house batteries? [message #359826 is a reply to message #359822] |
Tue, 27 October 2020 13:41 |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma: 5
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Senior Member |
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there are many different things that can deplete your batteries, or allow them to charge.
best thing is to have a good 3 stage converter, and use 110v power run that to charge batteries. Even a super small generator will power the converter to effectively charge the batteries up. you need to see about how the different banks are hooked up to make sure it is charging everything. the engine running will charge the batteries off the alternator, but that will be a slower process in most cases due to alternator size, and probably the wiring sizes to the battery banks.
There are so many variables to the different batteries, and wiring that people do to these coaches to even to begin. I have found time and money is best spent on conserving electricity, rather then finding ways to store it and generate it.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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| Re: [GMCnet] Does engine charge house batteries? [message #359843 is a reply to message #359729] |
Tue, 27 October 2020 22:07 |
Dolph Santorine
Messages: 1236
Registered: April 2011
Location: Wheeling, WV
Karma: -41
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Senior Member |
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Great article. I remember it, and until Ohm’s law is repealed, its remains the gold standard.
Dolph
DE AD0LF
Wheeling, West Virginia
1977 26’ ex-PalmBeach
Howell EFI & EBL, Reaction Arms, Manny Transmission
“The Aluminum and Fiberglass Mistress”
|[ ]~~~[][ ][] \
"--OO--[]---O-"
> On Oct 27, 2020, at 11:03 PM, Larry Davick via Gmclist wrote:
>
> I like this article from the late Gary Bunzer about batteries. It’s a little dated but the concepts are correct.
> http://www.gmcmhphotos.com/photos/data/5945/battery_balance_jan2012.pdf
>
> Larry Davick
> A Mystery Machine
> 1976 GMC Motorhome
> Fremont, Ca
>
> _______________________________________________
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