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Old 01-20-2009, 02:54 PM   #15
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Originally Posted by Mexray View Post
Gene,

I guess your question is not clear to me
Thanks Mexray. The question made a lot more sense to me when I wrote it than it does today when I read it again.

There was a post on this thread that seemed to say there is some limit based on a "code", a regulation, industry standard or whatever, to how much of the space in the battery box can be used, perhaps requiring how much space there must between the walls and the batteries, or how much clearance at the top. It could have something to do with preventing electrical shorts or dispersing fumes. It may only apply to batteries in a sealed compartment in the trailer rather than in a box on the tongue. If there is a "code", what's the reason? That's what I wanted to know.

Perhaps my 2nd question wasn't phrased well either. My understanding is there are 3 or 4 "series" designations for deep cycle batteries. It starts with the least—24, then comes 27, then I'm unsure. I would think the least capacity, the smaller the battery, but maybe not. I would think the boxes on newer Airstreams would be the same size because it's cheaper to make them that way. But maybe not.

So I'll try to ask better questions:

What do Series 24, Series 27, etc., each mean in terms of ampere hours? Do the numbers mean something else?

Are there standard sizes for each series? I doubt it, but why not ask? Are some brands more compact than others? Is there some way to know how much bigger each level (24, 27, etc.) would be? Does size difference in batteries come in width, depth and/or height?

Has anyone with a 2008 Safari 25' FB SE put in better batteries and, of course, did they fit?

Does anyone know whether battery boxes are the same in recent years, and have any info about what batteries fit besides orginal equipment?

Are sealed batteries or AGM's or whatever variety not originally installed, the same size or different than flooded cell batteries of the same series? On this or another thread, Lewster posted that he had to raise the sides of the box and reattach the lid to fit in 6 v. golf cart batteries. Is that generally true of golf cart batteries?

I know this is a lot to ask. I think when we discuss batteries some of possible solutions are impossible given the size of the box unless you want to change the size of the box. I'm not sure I want to go that route unless I am sure the benefit is substantial weighed against the cost of rebuilding the box. I am also concerned about whether there is a safety question related to getting a bigger battery into the existing box.

Another thought is that there are different series and different versions of batteries. Without going through all the permutations of this, there are many questions that can be asked from that fact. For example, does a Series 24 AGM have better ampere hour capacity than a flooded cell Series 24? I was never much good in school at permutations, but there seem to be between 10 and 20 of them, maybe more. So, I think there need to be comparisons based on type of battery and series to have better answers.

On this thread and others, people have their favorite brands (just like tow vehicles), but have there been objective ratings by some magazine or other group? If so, how do we find it?

I am not too concerned with whether I have to put water in a battery or not, but I am concerned with capacity, life time, how well they deal with abuse (some is just going to happen while boondocking and by abuse I meant discharge below 50%). Those are my standards, but other have other concerns.

The result of all this and the many different concerns people have, is one hell of a lot of confusion.

Back to you experts, and thanks for your attempts to educate us (it so much easier to ask questions than answer them).

Gene
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Old 01-20-2009, 05:19 PM   #16
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See the page on BCI group size for what the 24, 27 etc mean - essentially these numbers identify only a size and, perhaps, terminal location and type.

There are only a few battery manufacturers and it is a mature industry. That means that brand doesn't count for much. Batteries trade off capacity, longevity, and cost and you choose which 2 of the three you want. If you look at a line card, you'll see this. A good retailer will often have one or two in the line available. See the Trojan T105 vs t145 or the SCS200 vs SCS220 for example.

Quote:
The result of all this and the many different concerns people have, is one hell of a lot of confusion.
Part of this is because there are so many points of view that are not well founded. Even the sources with a good reputation will often offer platitudes that they contradict in their own data or explanations.There are other factors as well such as the wide variances in typical use profiles and inherent variability in batteries themselves.

As for your use, if you plan on regularly running your batteries flat, don't expect any good lifetime from them no matter what batteries you get. Instead, find a way to add more capacity to your bank or a way to charge them more often.

There is no magic bullet.
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Old 03-30-2015, 03:48 PM   #17
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This is an old thread but I didn't want to start a new one on batteries as there are a few hundred threads on batteries already.

I was toying with the idea of upgrading the Paralax to a Progressive Dynamics, 6v golf cart batteries, Solar panels, etc. - but until we retire, we're really only weekend warriors without a ton of boondocking planned.


So until then - I'm thinking we'll keep stuff "as is" and not go crazy on updates we can't maximize.

To that end, I DO need to replace my group 24 Interstates and am assuming if my local RV/Marine dealer sells an "off brand" (non-Intestate) group 24 deep cycle marine battery, that's probably good enough for the purpose described.

Can anyone confirm/disconfirm that assumption? Both local dealers tell me they stopped selling Interstates because they're too expensive.

Thanks!
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Old 03-30-2015, 04:29 PM   #18
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I've had good luck (in my low-tech Argosy with LED lights) with O'Reilly's group 24. That was what was in the trailer when I bought it, and that battery (now more than 5 years old) is in my project trailer as a placeholder, I put the newer one on the 24' trailer I travel with. Of course, a week after I bought it I realized that Costco sells one at an even better price ($85ish if I recall correctly) and that nice Costco service level is included with that one. I boondock a fair amount, I can go 2 nights with furnace use, 4 nights without if I stretch it. This is with a single Group24, but no 12v needed for my fridge or water heater so I'm just running lights, water pump and fan.
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Old 03-30-2015, 05:02 PM   #19
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My Ranger bass boat came with Deka deep cycle trolling motor batteries and I've always had very good service out of them, always replaced with Deka. You can order them from Lowes hardware. They will ship free to the store.

You can read up on the company, still privately owned.
East Penn Manufacturing – The world's largest single site, family-owned lead-acid battery manufacturer
East Penn Manufacturing.
A private, family-owned company operating
the largest single-site, lead-acid battery
manufacturing facility in the world.
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Old 03-30-2015, 06:30 PM   #20
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Be careful when buying a 'marine deep cycle' battery. These are essentially hybrids and are not true deep cycle units, as they are called on to perform double duty as a marine engine starter AND a deep cycle for lights, nav. equipment, etc.

Look for a true DEEP CYCLE battery for RV use.
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Old 03-31-2015, 09:27 AM   #21
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Originally Posted by lewster View Post
Be careful when buying a 'marine deep cycle' battery. These are essentially hybrids and are not true deep cycle units, as they are called on to perform double duty as a marine engine starter AND a deep cycle for lights, nav. equipment, etc.

Look for a true DEEP CYCLE battery for RV use.
Agreed, and good advice. You don't want the starter/trolling combo batteries.

Deka marine deep cycle / RV batteries are true deep cycle.
East Penn Manufacturing | Recreational vehicle batteries

I suggest the Deka deep cycle marine/RV because the OP didn't spend a lot of time dry camping. He was looking for a good second choice. The Deka marine deep cycle takes a lot of punishment. When you're bass fishing you use the trolling motor a lot and bring the battery level down pretty far, day after day. They are less costly and available through Lowes.

Deka also makes an AGM but if you're going that route I'd get the Lifeline or Trojan brand. I opted for Lifeline and have been pleased.
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Old 04-01-2015, 12:47 PM   #22
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New batteries

I replaced my converter/charger with the PD4655 with the charge wizard appx. $230.00 and batteries with 2 6 volt deep cycle wet cell batteries $300.00. So for less than the $555.00 for the diehards I now have a much better system than original system from AS very happy keeps batteries charged and in line within battery requirements from battery maker. I also put together a small 180 watt portable solar system two panels $300.00 morningstar charge controller about $60.00 and about $75.00 wires and connectors. I'm able to park AS in shade and place panels in the sun away from camper. With this system I'm able to stay out until the water runs out or the waste tanks fill. Rand
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Old 04-01-2015, 02:53 PM   #23
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I replaced my converter/charger with the PD4655 with the charge wizard appx. $230.00 and batteries with 2 6 volt deep cycle wet cell batteries $300.00. So for less than the $555.00 for the diehards I now have a much better system than original system from AS very happy keeps batteries charged and in line within battery requirements from battery maker. I also put together a small 180 watt portable solar system two panels $300.00 morningstar charge controller about $60.00 and about $75.00 wires and connectors. I'm able to park AS in shade and place panels in the sun away from camper. With this system I'm able to stay out until the water runs out or the waste tanks fill. Rand
Sounds like you've made some nice improvements.
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Old 04-01-2015, 04:06 PM   #24
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Wow! I just started reading at #1 and never noticed the thread dates back to 2009. These old ones should be closed, accessible as read-only, but closed.
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Old 04-01-2015, 05:59 PM   #25
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Originally Posted by richw46 View Post
Wow! I just started reading at #1 and never noticed the thread dates back to 2009. These old ones should be closed, accessible as read-only, but closed.
Why ? The info is still good and new people seem to join in on them.
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Old 04-01-2015, 06:17 PM   #26
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Wow! I just started reading at #1 and never noticed the thread dates back to 2009. These old ones should be closed, accessible as read-only, but closed.

My reply #17 explained the dilemma - there are literally hundreds of battery threads - many of which are similar and I didn't want to open a new one - so I had to pick an old one ...

Thanks for the info, gang. I went with the version the local RV dealer had in stock (similar stats to the original Interstate group 24s I replaced).

When we retire, I'm calling Lewster to discuss something completely different :-)
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Old 04-02-2015, 08:45 AM   #27
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[QUOTE=SteveSueMac;1601462]My reply #17 explained the dilemma - there are literally hundreds of battery threads - many of which are similar and I didn't want to open a new one - so I had to pick an old one ...
QUOTE]

I should have noticed since I started at #1. Sometimes I get distracted and forget to check the dates. I must have missed your #17 but I did see it after I posted my reply.

My mistake, not yours.
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Old 04-02-2015, 09:22 AM   #28
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Buy a MADE IN TEXAS Interstate green top RV Deep Cycle battery! You wont be disappointed. The store branded batteries are not made to last. They are "cheaper" because they are built that way. Interstate backs up their goods with the best and easiest warranty replacement, period.
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