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Old 03-23-2011, 11:25 PM   #1
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Battery???

I am going to be the proud owner of a Rockwood 2604 unit very soon. the unit come with one Interstate HD24-DP (Deep Cycle) 12 v battery.

Golf Cart Battery Specs


I am thinking about adding a second 12 v battery, Does it have to be the same brand/ size?? Can it be higher amperage?? if so, what size/brand??

Thanks

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Old 03-23-2011, 11:30 PM   #2
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If you are planning on running two batteries in parallel, then they should be the same. Otherwise, when the little one starts to die, the bigger one will try to recharge it, and you have lost all your extra capacity. Since you don't have the unit yet, negotiate with dealer for anther battery, or leave it out and you can buy two of your own.
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Old 03-24-2011, 09:18 PM   #3
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Quote:
Originally Posted by windrider View Post
If you are planning on running two batteries in parallel, then they should be the same. Otherwise, when the little one starts to die, the bigger one will try to recharge it, and you have lost all your extra capacity. Since you don't have the unit yet, negotiate with dealer for anther battery, or leave it out and you can buy two of your own.

thanks, I talked to the dealer today and asked him to quote me for swapping to a pair of SRM-29.
we'll see what he comes back with
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Old 03-24-2011, 11:14 PM   #4
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I also been checking into getting an second battery. From what I understand when adding a second battery is that the strength will be the same as the weakest of the two batteries. (Not sure if I worded this correctly but I remember it was similar to "being as strong as the weakest link")

I will buy two new batteries when I upgrade.
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Old 03-25-2011, 12:07 AM   #5
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I run two golf cart batteries. The reserve capacity is fantastic. I can dry camp for a weak on them before I need fire the genny.
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Old 03-25-2011, 09:02 AM   #6
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got word back from the dealer today. He says the rack for the battery is 23 in wide and the SRM-29 is 13 in wide, so 2 would be 26.....so I told him to look at the U2200 6 volt batteries.

I am curious, how do folks mount 2 batteries at a time with the space limitations???

Also, it would seem that they would be hanging out in the open. Is there a box that will handle two 6 or 12 volt batteries on the frame safely on a Rockwood 2604 frame???
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Old 03-25-2011, 09:16 AM   #7
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You know there are so many posts bashing the Interstate gp24 batteries and I really don't understand it. When we got our fiver in 2005 it came with one gp24 Interstate battery. Soon after I purchased three more of the same battery. After 6 years they are still going strong. Yes I will be replacing them this spring for 4 golf cart batteries with more capacity. BTW we camp probably 90% of the time in NF sites with no hookups and use an inverter for the TV/DVD/Sat receiver several hours a day.
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Old 03-25-2011, 11:12 AM   #8
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If you do a Google/Bing search for battery boxes and/or battery trays, you will get 100's of websites. I've been looking to upgrade my batteries and looked at battery boxes--they can get expensive ($80+).

I am thinking you could accomplish the same thing by purchasing an $8 bin from Walmart (adjusting for proper ventilation/drainage).
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Old 03-25-2011, 11:28 AM   #9
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Quote:
Originally Posted by donn View Post
You know there are so many posts bashing the Interstate gp24 batteries and I really don't understand it. When we got our fiver in 2005 it came with one gp24 Interstate battery. Soon after I purchased three more of the same battery. After 6 years they are still going strong. Yes I will be replacing them this spring for 4 golf cart batteries with more capacity. BTW we camp probably 90% of the time in NF sites with no hookups and use an inverter for the TV/DVD/Sat receiver several hours a day.
I am one that has not had very good luck with Interstate batteries, to the point that I will never buy another one, but I realize there are those which have had good results with them. I personally think they do not hold up to heat very well. It seems to me that individuals in hot climates, such as myself in Phoenix AZ, do not have good results with them, while individuals in cooler climates have better success. No scientific study, it just seems that the majority of people which have had a bad experience with Interstate batteries are from a hot climate.
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Old 03-29-2011, 03:26 PM   #10
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I told the dealer to install 2x U2200 6V Interstate batteries in series and I am picking up the Rockwood 2604 trailer from EconomyRVs tomorrow.

WRT the 6V batteries, I have some questions...

1. If wired properly will the batteries charge from the car alternator??

2. Will they charge when connected to shore power?

3. Will they charge from a generator??

4. While not in use, what should I disconnect, if anything??

5. Are there cut/off switches that I should install, or anything else from a safety/power conservation perspective??

6. What measurements if any should I take on the batteries??

7. What type of battery charger should I use on the system, if at all??

8. What type of maintenance is appropriate to extend the life of the batteries??
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-2011 Rockwood 2604, 2x6V Interstate U2200 batteries,Yamaha 2400 genny
-2011-23 nights
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