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Old 09-14-2014, 08:06 PM   #1
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Batteries draining

We have a 2014 sunseeker 2860 and 2 good tested batteries are being drained in12hrs. Using bare minimum of power. Anyone else? Help

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Old 09-20-2014, 10:55 AM   #2
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If you have a dometic fridge with the "climate control" check out this thread:

Dometic refrig climate control

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Old 09-20-2014, 01:53 PM   #3
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Thank you for your reply. The e fridge we have doesn't have climate control. We have no idea what it could be that's draining the batteries. Most of our camping is in the boonies with no power. Need to find the problem
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Old 09-20-2014, 02:24 PM   #4
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How about a cargo storage bay light left on. Sometimes the simplest is where to start. Also, if you have repeatedly drained your batteries to near dead, because of this problem, you have reduced the number of times your batteries will hold a reliable charge.

Try switching off breakers one at a time, while monitoring the battery drain, that at least will isolate the problem circuit and get you headed in the right direction.
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Old 09-20-2014, 03:26 PM   #5
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Have you tried disconnecting the positive and hooking up a multimeter between the positive cable from trailer and the positive on the battery to see how many amps your trailer is pulling from the battery?

I had to do this with my one year old interstate batteries. They were so sulphated, they wouldn't hold a charge anymore. Turns out my maintainer died on me and I didn't notice for a good two months. My fault since I should have been checking it.

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Old 09-20-2014, 06:57 PM   #6
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Just had batteries checked and there good. Will try the breakers. Thanks
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Old 09-20-2014, 09:34 PM   #7
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First thing I would do is get a clamp on amp meter and throw it on your positive battery cable. That will tell you the amps you are using. You don't say your battery size but my best guess is that if your batteries are like probably have 150-180 amp hours which translates into 80or90 USABLE amp hours. Divide the usage you see on the clamp meter into the battery capacity to see how long you have to dead flat under normal circumstances.
I am also going to suggest that if you have had flat batteries repeatedly...testing not the same as retaining full capacity so you are likely far short of "like new" even though the batts are good enough to use.
If you see a good sized draw on the batteries with the clamp step is pulling fuses as suggested. Watch the amp load drop as you cut stuff off and you'll know where your draws are coming from AND how big each is.
Make sure your clamp meter does AC/DC current (amps) measurement. This one from Amazon will do the job reasonably:

A 10 amp draw will take your batteries to dead flat in 15 hours or so if like new. You should not let it go more than 7-8 hours without a recharge.
Double the number for a 5 amp draw. etc. etc.
If you're not seeing a heavy draw...then your batteries aren't really in good shape even though serviceable for short periods.
Good luck and let us know what you figure out.
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Old 09-20-2014, 10:30 PM   #8
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