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Old 08-21-2006, 03:05 AM   #1
JDL
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Upgrading batteries in a 2005 bambi CCD

I currently have 2 SRM group 24 batteries on my rig. I will need to be replacing these soon.

Has any one put group 27 or 27T batteries in the battery box? I am not sure there is room. But if any one has put in 2 larger capacity batteries I would be interested.

Thanks

JDL
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Old 08-26-2006, 12:39 PM   #2
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Hmm. I was hoping at least one person... had upgraded their batteries from the group 24 size on a 19' bambi .. ... Anyone?
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Old 08-26-2006, 12:54 PM   #3
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JDL.

I don't have an answer for you, but I do wonder why you are replacing the current set so soon? Are they bad already? If so they should definately be under warrenty. Are those the Interstate batteries?

Jonathan
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Old 08-26-2006, 02:32 PM   #4
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Jonathan,

Thanks for responding. The previous owner discharged the batteries completely. (Dead.... Dead Dead...) I have them charged back up. But they are only at about 75% of capacity.. So, they work - but not well and I know enough about batteries to know they will not last too much longer.

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Old 08-26-2006, 05:57 PM   #5
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JDL:
I have 1 2005 CCD, but a 16' with a single group 24 battery. There are a couple of things I found out for going to a group 27 that might be useful to you.

First of course is the size of the battery - an inch and a half longer
Group 24 = 11 1/4 X 6 3/4 X 9 1/4
Group 27 = 12 3/4 X 6 3/4 X 9 1/4

Next is the weight - probably not a big deal, but you'd add about 10#
Group 24 = 48#
Group 27 =53#

Also, I found that the battery cables did not have enough 'reach' to get to the terminals. I suspect they were wired from the battery back into the trailer, and there was not enough slack to reach. Cables can be replaced with longer ones, but it's a pain digging out the sealant used to seal the opening where they go into the trailer.

These numbers are from a general reference, and I don't know if you might find differences between brands. Let me know what you find out - I think Airstream builds these with little room for upgrading to a larger size.

Hope this is helpful
Bob
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Old 08-26-2006, 06:11 PM   #6
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We have a 19" 2005 CCD also and were having problems keeping the batteries fully charged. We took it to the dealer (Sutton in Eugene) and they said one of the cells was bad and replaced both batteries.

JDL, did we meet you at Beverly beach last year? If so, glad to see you found a trailer!

Brad
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Old 08-26-2006, 09:19 PM   #7
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JDL, I was needing new batts. on my 28' CCD it seems the box is large enough, but I have not checked cable length. I had the misfortune of grabbing a bottle of reg. water to top off the cells. I'll go with grp.27 if cables reach. Darrell
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Old 08-27-2006, 12:50 AM   #8
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Thanks to all who replied.

Brad,

Yes, you probably did as I came by and was the guy looking for a CCD. Thanks

RDM16CCD - Good. Info based upon your measurements and Darrell Roots box observations I will see what I get. I also need to check cable length. But if its only 1 inch and 1/2.... It should be ok..
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Old 08-27-2006, 09:00 AM   #9
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Quote:
Originally Posted by JDL
Thanks to all who replied.

Brad,

Yes, you probably did as I came by and was the guy looking for a CCD. Thanks

RDM16CCD - Good. Info based upon your measurements and Darrell Roots box observations I will see what I get. I also need to check cable length. But if its only 1 inch and 1/2.... It should be ok..
JDL--We had a ccd16 2004 and replaced our 24 with a group 27. Cable length is a concideration . I was able to work enough slack in the cables to use it without breaking the sealant in the foor. Suppose it just depends on the individual trailer. The added capacity,[24 to 27], made a big difference in our boondocking ability.---pieman
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Old 09-06-2006, 07:33 AM   #10
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store/use switch and charging?

This should probably be a new thread but...

When not using the trailer and stored in the driveway, I normally keep the store/use switch in the store position and keep an external charger hooked directly to the batts. and check the water regularly.

Now after almost 4 years, the batteries are slowly losing their mojo and I figure I'll be replacing both next spring (I've started using a Battery-Minder attached directly to the batts this summer and they have held up as well as can be expected).

What I discovered yesterday surprised me though...

I was breaking in the new Honda eu3000is (what a beauty! and quiet, my god!) and thought I'd put a mild load on it for a few hours so I plugged in the trailer. I turned on the A/C fan and both Fantastic Fans figuring that'd put a few watts of load on it. That went along for six hours nicely and the voltage meter in the trailer read a rock-solid 123v all day.

When I shut down the generator and started putting everything away, I went into the trailer and turned on an overhead light and it went dim almost immediately. Now I hadn't switched the store/use switch to use when I plugged into the generator, it had switched over automatically.

First question, does the store/use switch automatically switch to use when plugged into shore/generator power? I've not noticed before.

I checked the batteries and they were both 10-11v, obviously not feeling well and after being on the generator most of the day. The breaker hadn't tripped. I then turned the store/use switch to store and called it a day, figuring one or both batteries are finally giving up.

When I plugged the trailer in to shore power, lights are bright, A/C fan turns,~120v on the meter inside...all is well. Except the batteries are showing barely 11v and apparently no charge volts going to them. The store/use switch has now again, automatically switched to use so I "should" be getting a charge to the batteries. I checed voltage at the converter/charger (Parallax) and was getting 13+v to the batteries (at terminal C &D) but nothing at the batteries.

Just for grins I cycled the store/use switch off and then back on and voila, 13+ volts at the batteries!

Second question, has anybody had to cycle the store/use switch to get battery charging current to the batteries?

I thought that this, if correct, was leading to some unexpected battery charge levels over the past few years.

Thoughts??
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Old 09-06-2006, 07:55 AM   #11
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Jdl--the reason for the cable lenth problem when switching from24-27 is the posts location on the 27s are opposite those of the 24. Not sure that was explained.---pieman
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Old 10-26-2006, 02:59 PM   #12
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Question

Any preference..pluses and minuses...deep cycle or standard??
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Old 10-26-2006, 04:26 PM   #13
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A PowerPulse Desulfator would help extend the life of your batteries.
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Old 10-26-2006, 04:49 PM   #14
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Have you considered upgrading to the AGM batteries? They're a bit pricey, but mine are still going strong. If they did need replacing, I would get the AGM's without hesitation.

http://tinyurl.com/y47l5q
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Old 10-26-2006, 10:46 PM   #15
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JDL (gotta love those initials) -- I measured the battery box opening on my 2007 20' to be 14 3/4 x 13 inches. There's actually a bit more room inside, as the hinged lid encroaches on the 13 inch dimension, so it might be possible to install batteries slightly longer that 13 inches.

At any rate, a pair of Interstate SRM-24s could be replaced with SRM-27Bs at 12-3/4 x 6-3/4 x 9-1/2 each. I don't know if the SRM-29 would fit at 13 x 6-3/4 x 10 because they might prove to be too tall (I neglected to measure the available height). It'd might be pretty cool to have the 29s, just looking at their 210 RC rating, compared to 140 for the SRM-24

For sure a pair of interstate SC31DM (or DA) AGMs would fit at 12-13/16 x 6-1/2 x 9-3/8 each, but I'm not prepared to give an opinion on AGM v traditional deep cycle batteries...

Of course, all this ignores the post positions, as noted by others. Have you made your choice by now, and what did you end up with?

Cheers,
-jd (l...)
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Old 10-27-2006, 08:00 AM   #16
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battery box details

Should have put up a picture of the battery box!
Click image for larger version

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Stock Interstate SRM-24 Deep Cycle Marines. Opening is 14.75 x 13: more than enough for 27s. (larger pic on flickr.com)

I did notice the connectors are somewhat recessed from the lid top, but I didn't get the actual measurement of how tall a battery would fit.

Cheers,
-jd.
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Old 10-27-2006, 08:44 AM   #17
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it's pretty easy to make the factory 2-battery box taller to accomodate taller batteries. I have a photo showing this in members photos. I replaced the group 24 12v's with 2 6 volt agms.
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Old 11-01-2006, 11:50 PM   #18
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5cats,

Thanks. I ended up using 2 Costco group 24 batteries. I tried and tried to get the 27's in the box and they would NOT fit!

However, I saw some group 27's at batteries plus that may.. They do not have the carry strap. Just a plastic handle in the middle of the battery.

(The tabs that hold the carry strap on the interstate / Costco batteries stick out just far enough so that you cannot cram them in the box..)

--Airstream--- (I know you read these posts...) could we make the battery box 1 inch wider so we could get a pair of group 27's in? It sure would make boondocking a whole lot easier...
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Old 11-02-2006, 08:41 AM   #19
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Quote:
Originally Posted by JDL
5cats,

Thanks. I ended up using 2 Costco group 24 batteries. I tried and tried to get the 27's in the box and they would NOT fit!

However, I saw some group 27's at batteries plus that may.. They do not have the carry strap. Just a plastic handle in the middle of the battery.
Sorry I should have been clearer that the measurements were all for Interstate battery specifications. I've never measured the Kirklands... Did you have any issue with the cabling positioned inside the battery box, or was it purely the handle tabs in the way? I might seriously have considered cutting off the handle tabs in the latter case, but haven't tried the fitment myself.

When I trash my own 24s, my evil plan is to look very closely at Interstate's SRM-27B or even SRM-29 -- still flooded cells, but having 180 and 210 RC respectively, versus 140 of the SRM-24s that come with my Safari.

Still, hard to beat Costco's prices, convenience, and return policy -- glad you got power.

Cheers,
-jd.
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Old 11-03-2006, 12:55 AM   #20
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Quote:
Originally Posted by 5cats
Sorry I should have been clearer that the measurements were all for Interstate battery specifications. I've never measured the Kirklands... Did you have any issue with the cabling positioned inside the battery box, or was it purely the handle tabs in the way?
-jd.
As far as I can tell it was just the handle tabs. If you cut them how are you going to get the battery out?

Also the plastic tray at the bottom is sized for group 24's.

Let me know what you do!

JDL
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