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Old 03-26-2012, 05:06 PM   #1
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Optima Batteries

How many of you have upgraded your battery to an Optima deep cycle AGM?

I have decided to buy a second battery for dry camping and have been looking at the Optima D31M Blue Top. I have an x17z hybrid and mainly need the battery for limited use of interior lights, water pump, furnace and fridge (on propane). Most of my dry camping will be limited to 3 nights.

The Optima is pricey but if you believe the advertising it is worth the money. What has been your experience with this battery?

I have also considered a small generator to charge the battery but from what I have read you have to run them for a considerable time to charge the battery. I'm thinking I can get away with 2 batteries instead.


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Old 03-26-2012, 05:22 PM   #2
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Rick, I don't know what the Amp Hour (AH) rating is for an Optima D31M Blue Top but typically, you will get more AHs with two 6v vs. two 12Vs. I picked up two new GC2 6Vs from Sams Club yesterday and it was under $200 for everything... core charge, battery fee, etc. I bet that's less expensive than one Blue Top.

My understanding is that the AGMs are great if you need to place it in a sealed area but do you?

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Old 03-26-2012, 05:24 PM   #3
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I don't know much about that battery but I tried dry camping with the battery only and lasted about 8 hours LOL. Now I have a generator (3500 starting 3000 running watts) and it runs my a/c and keeps my battery charged.
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Old 03-26-2012, 06:04 PM   #4
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+1 on the SAMs 6 volt. I have never owned an Optima, but from what I can tell it is not worth the $$$$$$ based on that kind of usage.
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Old 03-26-2012, 06:27 PM   #5
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I have three blue tops in my boat, and two red tops in one of my trucks, and they are great - for those applications. I don't think you'll get the benefit of an Optima in an RV though. You'll get more for your money by either buying a cheap 12V deep cycle to go along with your existing battery, or getting two 6Vs as mentioned above.
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Old 03-26-2012, 06:50 PM   #6
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I bought a GMA battery last fall. Have not really tested it out so far. Normal 12 volt deep cycle group 29 will last 10 days or more when we dry camp without using the furnace. I wanted the GMA (not Optima) so that I can use and charge it inside the camper when we go on long dry camping trips. I plan on using it to run a computer, tv, video games, etc.
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Old 03-26-2012, 07:22 PM   #7
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I had thought that the Optima's claim was being rugged, so great for off-road / marine use.

I bought a set of Costco batteries (for my truck) which lasted just 2 years BUT there is a FULL refund 36 month warranty (and a 100 month pro-rate) on them so I got a brand new set for free! If you boondock a lot, warranty may be something to consider?
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Old 03-26-2012, 08:54 PM   #8
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Quahog- is this the battery you got at Sam's?

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Old 03-26-2012, 10:47 PM   #9
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I have two Optima's in my truck but if we were boon docking I would use two 6V.
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Old 03-27-2012, 05:11 AM   #10
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How many amp hours does switching to a dual 6v set up provide over a single and dual 12v set up? DW and I will be doing some off the grid camping.

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