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Old 05-26-2012, 03:20 AM   #1
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I have a new Interstate 24 deep cycle battery on my Sunset Trail 29qb
when camping 2 weekends and I hit the batter check button in the camper and it showed low battery yet I was pulled in both weekends and most of the time when I was parked at home.
I cleaned the wire connectors (seems a little oxidized) then the battery showed full charged when Rv was plugged in. now its been plugged in for 5 days and shows 13.7 Volts while the trailer is plugged in and shows 11.0 when i unplug the trailer.
So it seems to be charging but maybe the battery is bad?
I guess Ill bring it back toInterstatebattery and have them check it.
I also seem to remember the inverter/charge used to may a fan noise but it doesnt seem to now, but maybe that was my later older trailer
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Old 05-26-2012, 04:06 AM   #2
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When we bought our present rig, I had them install two 12volt batteries. yup, they were Interstate 24. They wouldn't hold a charge very long either. I wanted a solar panel so when I installed that I switched over to two Trojan T105 6 volt deep cycle. Man, what a difference. I would encourage anybody that was thinking of spending money for new batteries to go that route. Especially if they do much dry camping.



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Old 05-26-2012, 04:11 AM   #3
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Thanks but i didnt do any dry camping I was plugged in both weekends
we always camp with full hookups so it should be fine if its charging and the battery is good
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Old 05-26-2012, 04:51 AM   #4
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It sounds like the battery, but try charging your battery with a battery charger... see if it holds a charge then. That can help isolate your issue to either the battery or converter.
Did you check the battery fluid level?





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Old 05-26-2012, 05:57 AM   #5
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i brought the battery back to Interstate and they tested the battery and it was bad, so they gave me a new one.
Only thing now is it is the second bad battery this year so hopefully its not the charger killing them
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Old 06-11-2012, 11:53 AM   #6
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new battery and we went camping for 3 days I get home and hit the battery button after being plugged in for 3 days and it shows 3/4 charged
it doesnt seem right

Edited by: gsxr
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Old 06-11-2012, 01:30 PM   #7
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What is turned on when you hit the battery status button? If lights, water pump, radio, fan etc are running they may cause a voltage drop that will read as low batt.
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Old 06-11-2012, 01:38 PM   #8
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I dont think anything was on, I was at home unloading the trailer, but Ill check it again
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Old 06-11-2012, 02:16 PM   #9
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I am not a big fan of Interstate marine/rv batteries. Have had problems with them in the past. Check voltage on the battery when plugged in. Should be above 13 volts. Check unplugged and disconnected and should read about 12.7 volts. You could also buy a battery hygrometer and check the specific gravity of each cell to see if there is a weak cell.
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Old 06-11-2012, 11:59 PM   #10
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I agree with Dale on those Interstate batteries. They have never held up for me either, and they seem to drop their charge very fast.
Also, the battery meter that comes with coach isn't any better. You can get a meter for about $10 that will tell you exactly what the battery has in it for charge. Just that it's a little more trouble to check because you have to touch the probes to the battery posts.
When I installed the solar panel, I got the regulator with the digital meter. That shows the condition of my batteries both in volts and %

The 24 series isn't a very big (capacity) battery in the first place. There isn't to many beans under the hood on that one.







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