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Thread: Batteries
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12-30-2021, 05:31 PM #1
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Batteries
I have a '20 303rls. Had it just over 2 years. My dealership installed batteries (Interstate) are not holding a charge. Without spending an arm and 2 legs what kind of batteries would any of you suggest? Thanks
Gerry & JoAnn Filippi
2022 Dodge Laramie 2500 Diesel 4x4
2020 Reflection 303RLS
Plumas County, CA
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12-30-2021, 05:40 PM #22021 398M Full Body Paint 8k axles. LRH tires. Disc brakes.
Two bathrooms, no waiting 155 fresh, 104 black, 104 grey 1860 watts solar.
800AH BattleBorn Batteries No campgrounds 100% boondocking
2020 Silverado High Country 3500 dually crewcab Duramax Allison
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12-30-2021, 05:44 PM #3
Before writing the batteries off, there are a few things you can check.
First, check the electrolyte levels. These rigs come with converters made by WFCO which are known for never going into float mode thusly cooking the batteries. Have certainly noticed that on my rig before swapping out for a Progressive Dynamics PD 9260. Every time I checked my batteries, the level was low.
Once you confirm or correct the electrolyte level, check the converter voltage to ensure charging.
Maybe pull the batteries and out and put on a battery charger to see if it will take and hold a charge.
My previous mh had batteries going on 8 years old when I sold it (Interstate GC-2’s)
Good Luck,
Bill2019 GMC 3500 SRW Sierra Denali Duramax
2020 Reflection 315RLTS
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12-30-2021, 05:54 PM #4
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What is your evidence they aren't holding a charge? Do you leave the trailer not plugged in for a couple weeks? Do you shut off the Battery Disconnect Switch? Do you know if the Battery Disconnect Switch actually disconnects everything? Check the voltage when you're plugged in to make sure the converter is charging the batteries.
Two year old batteries should not be bad already unless they have been discharged too far, too many times. Best check to find out why they are not holding up before you add new batteries and have them fail too.Howard and Peggy
2019 Momentum 351M, and 2018 RAM Cummins dually 6-speed.
His: 1999 Honda Interceptor
Hers: 2013 Spyder ST-S
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12-31-2021, 08:14 PM #5
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Two years seems like pretty short life.
After checking the acid level, it might be worth trying to "recondition" (desulfate) them with one of these chargers. I've brought back a few flooded lead/acid batteries with mine.
https://www.stanleytools.com/product...charger/bc50bssignature
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12-31-2021, 11:56 PM #6
When I was using 12V LA batteries, 2 years was about all I got out of them. Partly because most 12 volt batteries are NOT true deep cycle, rather a hybrid. If your batteries say Marine anywhere on them, they are a hybrid. Those just do not do well in a deep cycle application. The standard WFCO convertor is junk. They hardly ever go into Float (13.2) or bulk (14.4) they stay stuck at 13.6.
The reason I suggested the Costco 6 volt golf cart batteries is that thay are true deep cycle batteries, and the most affordable way to get true deep cycles... You can use the money saved towards replacing that WFCO convertor. A WFCO is not good for your batteries. It needs to go.Last edited by huntindog; 01-01-2022 at 12:03 AM.
2021 398M Full Body Paint 8k axles. LRH tires. Disc brakes.
Two bathrooms, no waiting 155 fresh, 104 black, 104 grey 1860 watts solar.
800AH BattleBorn Batteries No campgrounds 100% boondocking
2020 Silverado High Country 3500 dually crewcab Duramax Allison
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01-01-2022, 05:30 AM #7
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My Momentum 394M (2018 model) has a WFCO 9855 series converter/charger in it and I see the 13.2 float voltage a lot. I'm plugging in 24/7 unless we are traveling or I have the trailer pulled out of the RV shelter to do some work on it. I honestly have found no issues with that particular converter/charger. My first choice would have been a Progressive instead of the WFCO, but like I said, no issues so far. It is working well enough that I will leave it in the trailer when I get done building my LFP battery and use it instead of switching over to a Lithium profile based charger.
2016 F350 CrewCab Dually
2018 Momentum 394M...Heavily Modded!
2023 Suzuki GSX-S1000 GT+
Excessive Payload is a Wonderful Thing
"If it ain't fast....It ain't Fun"
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01-01-2022, 08:43 AM #8
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The Trojan T105 golf cart batteries could be one of the best. They came out with the original golf cart battery 90 years ago. More than 90% of golf courses use them. We got 2 last year and have been happy with them.
Marcy & Gary
2014 Grand Design - Reflection 303RLS
2022 GMC 3500 Denali Duramax Longbed SRW
2015 GMC Denali 3500 - Retired
2003 F350 - retired
Michigan
We're in trouble now, the dog are bloggin'!
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01-08-2022, 07:35 PM #9
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01-08-2022, 07:50 PM #10
We have 2 Costco GC2 batteries and are happy with them so far.
2019 GMC 3500 SRW Sierra Denali Duramax
2020 Reflection 315RLTS
Air Springs - Couple of Questions
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