| [GMCnet] How many batteries [message #105213] |
Sat, 06 November 2010 01:13  |
cfield@ix.netcom.com
Messages: 22
Registered: February 2004
Location: Bainbridge Is. WA
Karma: 0
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Junior Member |
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Hi Mike,
I have a 77 Royale and here is what I know. The rear battery in the front is a house battery and I have mine connected to a solar unit on the roof which keeps it up most of the time. The rear battery in the generator compartment is also a house battery and in connected in line to the front unit. I have disconnected it from the generator for charging so that it is only charged from the motor, solar unit, or the busz box. The total system starts the gen. set. Seems to work best this way. I run a deep cycle battery up front as the house and a deep cycle in the rear and have always had good power. I change out each of the house batteries every three years regardless of condition. I like the Costco RV/marine battery.
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| Re: [GMCnet] How many batteries [message #105217 is a reply to message #105213] |
Sat, 06 November 2010 05:28  |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
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Senior Member |
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quote edited to shorten it...
| cfield@ix.netcom.com wrote on Fri, 05 November 2010 23:13 |
I have a 77 Royale and here is what I know. The rear battery in the front is a house battery ... The rear battery in the generator compartment is also a house battery and in connected in line to the front unit. ... I run a deep cycle battery up front as the house and a deep cycle in the rear ... I change out each of the house batteries every three years regardless of condition.
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Sounds like very close to how they where set up from Coachman.
The main issue with the Coachman set-up is:
The two house batteries will try and equalize the charge between them. The long cable between them has resistance that will cause power loss. Left alone the batteries will drain each other. How long will it take? Depends. I do know the older the batteries, the shorter the time. (I think the Coachman designer had stock in a battery company.)
If you change the set up to something closer to the late GM OEM set-up, except using 2 six volt golf cart type batteries in the rear, you should see better power storage and longer battery life. You shouldn't have to replace the batteries more than every 5 years or so. Also, I am fairly sure 2 Trojan 6v batteries will cost less than 2 12v marine batteries.
If you do not dry camp, and do not mind replacing your batteries as often as you are... you do not need to change anything. It IS your coach!
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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