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Old 03-04-2014, 07:57 AM   #1
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need advice with new battery

still new to our 73 23' Safari. we need to replace a spiral battery before taking off for 2 month trip. i have searched the site but haven't found much. I would appreciate suggestions.

btw...why is my question never in bold like everyone elses? am I missing something?
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Old 03-04-2014, 08:13 AM   #2
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Originally Posted by Lexxy View Post
still new to our 73 23' Safari. we need to replace a spiral battery before taking off for 2 month trip. i have searched the site but haven't found much. I would appreciate suggestions.

btw...why is my question never in bold like everyone elses? am I missing something?
Your question isn't bold because you've already read it. Only unread are bold.

Are you asking about what brand of AGM battery to buy? I think we have Exide in our AS but we haven't had it very long so I can't speak to how long they last. PO said the estimate was for another 3 years and he owned the trailer for 2.5 years.
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Old 03-04-2014, 08:23 AM   #3
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still new to our 73 23' Safari. we need to replace a spiral battery before taking off for 2 month trip. i have searched the site but haven't found much. I would appreciate suggestions.
For basic full hookup TT applications you need a 12 volt deep cycle battery. Beyond that the choices become more esoteric to include additional capacity for dry camping, boondocking, solar, etc.
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Old 03-04-2014, 08:26 AM   #4
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I bought 2 deep cycle batteries from Costco, very reasonable as I recall. Wally World also has good value batteries, both are made by Johnson as I recall, made in USA.
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Old 03-04-2014, 09:16 AM   #5
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Thanks for the help with the bold on the title....good grief...you'd think I'd never used the net!

I will relay all info to Mr and battery installer. I was concerned about the added weight com paired to the present one and whether 2golf cart batteries would be better.

Much appreciation.
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Old 03-04-2014, 09:49 AM   #6
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Originally Posted by Lexxy View Post
Thanks for the help with the bold on the title....good grief...you'd think I'd never used the net!

I will relay all info to Mr and battery installer. I was concerned about the added weight com paired to the present one and whether 2golf cart batteries would be better.

Much appreciation.
You didn't mention the possibility of two 6 volt in series golf cart batteries as a choice in your search. If you can find room for them you will have more capacity, lower price, good life, and a generally overall superior system than with any one or two 12 volt batteries in series. At Costco or Sam's club the golf cart style batteries are about $90 each.
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Old 03-04-2014, 10:34 AM   #7
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You mentioned 'spiral' battery...which leads me to believe your old battery is an Optima with the 'round' cells...

Optima's are rated at only 55 Amp Hours, due to the 'voids' between the cells - regular rectangular type batteries don't have those 'voids' inside; contain more plate 'area' and as a result usually have 80 Amp Hour ratings...The more Amp Hours, the longer you can run your 12 volt stuff when 'off the hook'...

Flooded cell (wet) Deep Cycle batteries are the best bargain...AGM, sealed types are Deep Cycle and require less care, but can cost about twice as much as wet cell units...
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Old 03-11-2014, 05:55 AM   #8
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I don't mean to get complicated but I know agms take special charging and I don't know if that original charge box thing...forgot the official name...will charge one correctly. We had a sailboat for 9 years and had 7 agms but made sure the inverter/charger was compatible. Maybe it's just not as important if it's just 1 battery rather than a bank.

Has anyone used that original buzzing charger thing with agms? I would go to the trailer and get the name of the buzzer thing but I'm old and it's way at the bottom of the hill....and it's 6am!

I do appreciate any help.
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Old 03-11-2014, 07:23 AM   #9
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If all you're doing is replacing a spiral battery, that can be accomplished with one, or two if you prefer, 12 volt flooded cell batteries as long as you're willing to check the water level every 1-2 months. This will avoid having to invest in more expensive AGMs and converter/charger. If you plan to dry camp without power for more than a couple days then by all means buy AGMs, an inverter/charger, generator, and/or install solar.
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Old 03-11-2014, 07:37 AM   #10
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The issue with the original univolts/single stage converter is that AGMs are extra-sensitive to overcharging, so the single stage converters will kill an expensive AGM much faster. Since AGMs are that much more expensive, if you're not planning to replace the converter, stick with cheaper flooded batteries. (You can use flooded batteries with a multi-stage charger, too.)
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Old 03-20-2014, 11:17 AM   #11
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Just what I needed. We learned to not use much electricity sailing around the world for 9'years. Thanks....a reg ole battery will do.
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Old 03-20-2014, 02:56 PM   #12
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Most deep cycle batteries are not true deep cycle a big hint is if you see cca (cold cranking amps)sticker its not a true cca battery,golf cart batteries are true deep cycle batteries just feel the weight more lead means thicker plates in the batteries as used in real deep cycle batteries, agm batteries (absorb glass mat) have no liquid acid the big advantage is when they are low on charge they don't freeze and get damaged like liquid lead acid batteries.some good companies of agm batteries concord,sunforce. They are more money but are true deep cycle batteries and can last up to 16 years if taking care as proper charging and don't run them below 50% state of charge.{soc} as per what others have said regarding the on board charger in your airstream I would call airstream as when they install solar at the factory they install agm batteries!
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