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Old 08-25-2016, 04:00 PM   #1
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winnebago 2007 class a voyager

we replaced a dead battery for front of rv with new one and the 2 coach batterys are 100% charged and the rv wont hold power why?

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Old 08-25-2016, 04:52 PM   #2
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There are many things that draw power, even when you think they are off. A stereo uses power for preset station memory and a clock. The engine computer consumes power. LP gas detectors, LED thermostats, remote locks, etc. Often overlooked is the TV antenna amplifier, perhaps a compartment or closet light, etc.

If not connected to shore power or solar panels on the roof, it's best to turn battery isolation switches to off. Even that sometimes isn't 100%. I have knife switches mounted on the terminals of my house batteries, I've learned the BIS don't disconnect them 100% in storage. With the knife switches, I've left the RV for months at a time with no battery discharge.


Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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Old 08-25-2016, 05:22 PM   #3
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Originally Posted by debbie gant View Post
we replaced a dead battery for front of rv with new one and the 2 coach batterys are 100% charged and the rv wont hold power why?
There are parasitic draws on the chassis(starter) battery, even with the ignition off. On this model of Winnebago, there is no way for the chassis(starter) batter to be charged unless the engine is running. Many people will add a http://http://www.lslproducts.net/TLSPage.html Tril-L-Start to keep the chassis(starter) battery charged when sitting for any length of time.
Paul & Ann Iowa
2005 Winnebago Voyage 38J
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class a, voyage, winnebago

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