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Old 08-08-2013, 09:54 PM   #1
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Double, double, boil and trouble.

This week's problem started last week with a smell. I initially thought it was a waste water smell, but couldn't find anything. Turns out the rear starting battery was being boiled dry. Not good. This, of course, happened while I was on the road. I bought a battery to carry as a spare because the starting battery(ies) still worked, but wouldn't last long.

Made it home, but the batteries were toast the next morning (second time this year it's broken down in my garage--at least it's trying). Figured the problem had to be my new 270a, DC Power alternator, but discovered it would also boil them with the engine off and on shore power. I measured charging voltage on both the starter and coach batteries--both normal--and discovered the separator didn't seem to work on occasion and was getting warm even while the engine was off with no shore power. Replaced the batteries and separator, so far it seems fine, but I'll be sniffing around it for a while.

Sigh
Z
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Old 08-09-2013, 09:53 AM   #2
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Re: Double, double, boil and trouble.

You do realize that these vans don't suffer problems like this if you would just leave them in the garage?

Mine is fine while parked in my driveway.

Mike
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Old 08-09-2013, 11:39 AM   #3
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Re: Double, double, boil and trouble.

Tom,those alternators are supposed to have an upgraded regulator in em. I'd be surprised if that was the culprit. Mine ramps way down when there is no load and the batteries are fully charged. Not to say things can't go wrong but since I installed AGM starters I haven't had any more trouble...before I was going through batteries at least every two years and the first two years I owned the van I had to replace them twice. If you've lost the regulator I'm sure you'll be able to tell and I would think DC-Power might make it good for you. I just think wet cell batteries suck
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Old 08-09-2013, 05:59 PM   #4
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Re: Double, double, boil and trouble.

AGM batteries weren't an option at the time. I agree, next time. I drove the rig 100 miles today, everything seems fine.

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