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Old 10-18-2020, 01:55 PM   #1
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6v GC battery doesn't fit, help

I purchased a 2021 Sunseeker SE...

It comes with one flooded house battery...

I was trying to upgrade to 6v golf cart batteries, and of course the step that they would go in is about a 1/4 inch too short... the step that they go in will close and latch, but the terminals touch the bottom of the step...

Having a hard time believing that FR didn't account for the size of the most common RV battery upgrade...

Anyway, I noticed that GC batteries vary in height (I've seen 10.75 " - 11" height), the battery i have tried but touched the bottom of the step was 10.75"... seems to me that a 10.5" would fit... Has anybody else had this problem and found a GC24 battery with a height lower than 10.75"?

In the picture below the battery on the left is a GC battery... you can see how close it is, very frustrating that FR didn't account for the size of a GC battery...
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Old 10-18-2020, 07:46 PM   #2
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I donít belive you will find a shorter GC-2 battery. Those that have done that upgrade have removed the hinged step tread and added a riser around the compartment and reattached the step tread.
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Old 10-19-2020, 08:12 AM   #3
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Thanks a ton Steve... appreciate the response...

So frustrating FR didn't account for this...
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Old 10-19-2020, 08:14 AM   #4
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Anybody tried shaving down the terminals, or trimming with a Sawzall, dremel etc?
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Old 10-19-2020, 08:24 AM   #5
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What steve-w said..

You're not likely going to even notice a 1/4 inch height difference. Is the underside of the step conductive? If so, I'd put something on top of the battery that is not conducive.
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Old 10-19-2020, 10:54 AM   #6
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Yes, the step is painted steel... I had planned on adding tape to the bottom for short contacts (a big bump that would make batteries move etc) and I also planned on trimming the plastic caps so that they sat above connections i had made...

Anybody tried trimming terminals? I guess I could play around with old cores i have sitting around...
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Old 10-19-2020, 01:02 PM   #7
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I've never had the need to trim terminals but it's possible that grinding them down and using another type of terminal may give you a little bit more room.

I think I'd be careful with tape and a metal stair. Tape can wear through easily and cause a short.

Could the step be made with a wood underlayment? I don't know how that's put together.. just trying to help.
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Old 10-19-2020, 02:01 PM   #8
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Did you think about replacing the lead acid 12 v with a LiFePO4 battery? Should fit, and because of it's chemistry you can safely discharge them to near zero SOC nearly doubling your usable capacity, you also save on weight, they recharge much faster and are truly maintenance free and have a life of 3000 - 5000 cycles. Upfront cost is more but have a 10 year warranty.

I replaced my 4 GC2 with 2 Battleborns 6 months ago and glad I did. No watering, corrosion, acid fumes on charging, less run time on the genset because they charge faster.
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Old 10-19-2020, 04:59 PM   #9
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I got a sunseeker. I just got a quotation to install solar panel with new batteries in the step.....
Batteries in the quotation are deka solar ps-62000. 220 amp 6 bolts. Hight for those batteries are a little short of 9 inches
Should fit in the step
More expensive than lead acid but cheaper than lithium
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Old 10-19-2020, 05:27 PM   #10
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Put a spacer on bottom side of step.
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Old 10-19-2020, 06:33 PM   #11
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Quote:
Originally Posted by mainvilley View Post
I got a sunseeker. I just got a quotation to install solar panel with new batteries in the step.....
Batteries in the quotation are deka solar ps-62000. 220 amp 6 bolts. Hight for those batteries are a little short of 9 inches
Should fit in the step
More expensive than lead acid but cheaper than lithium
Not to take this thread off the OP’s question but those PowerSonic batteries are primarily designed for standby and light cycle discharge. I don't believe they would survive very long in a RV deep discharge environment.
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Old 10-19-2020, 06:55 PM   #12
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Quote:
Originally Posted by Steve-W View Post
Not to take this thread off the OPís question but those PowerSonic batteries are primarily designed for standby and light cycle dischargeI don't believe that would survive very long in a RV deep discharge environment.
Thank you, I will check on that
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Old 10-19-2020, 07:15 PM   #13
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Thank you, I will check on that
After looking a bit more I'm not sure I was looking at the correct battery. It appears that both Deka and PowerSonic use the same part number but are a completely different battery. Sorry if I misspoke. I have not been able able to locate the data sheet on the Deka.
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