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Old 12-09-2015, 06:46 AM   #31
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Quote:
Originally Posted by benagi View Post
Poorbuthappy, I've seen on other threads that some people leave their rv's plugged in all winter and never had a problem with boiling batteries. Can someone chime in on this who leaves their unit plugged in when stored? Thx.

I leave mine plugged in all winter, in fact, all the time and my batteries have never boiled. I do have maintenance free batteries that came with my 2014 Sunseeker. My batteries are 2 years 8 months old and currently need replacing. Now, I can't say if my leaving it plugged it in shorten my battery life but, I am upgrading to AGM 's as I have already upgraded the converter from WIFCO to Progressive.


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Old 12-09-2015, 08:23 AM   #32
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If you have the Progressive Industries converter then one can leave plugged in. I changed out our converter to the Progressive unit 3 years ago. Factory converter would boil batteries and I had to add water 4-5 times a year.

Have only topped off water in batteries once in 3 years with the Progressive. I still check the water level 3-4 times a year.

BTW- my unit stays plugged in my driveway 24/7.
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Old 12-09-2015, 03:43 PM   #33
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Just buy 2 Deltran Battery tenders JR on ebay for about $25 each with free shipping. Connect one to the coach batteries and one to the chassis battery. They have float, storage, desulfication modes etc and cannot boil the batteries even if they fail since they max out at 0.75 amps. Onboard converter should also work but if it doesn't perform as it should you can cook the batteries. I have always used Deltrans and after 4+ years, batteries are still good. Under 3 years for battery life seems low unless they were deep cycled a lot or run low on water. So called Maint free batteries still need their water levels checked with heavy use like an RV, but less frequently than normal batteries. Typically under normal usage and no over charging the battery will fail for other reasons before the water gets low, hence "maint free".
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