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Old 08-31-2022, 01:57 PM   #1
Montana Master
Join Date: Dec 2005
Location: Eugene
Posts: 1,034
M.O.C. #5091
Battery question

I purchased 2 new batteries last September. By mistake, one battery is a Marine/RV 24M650 and the other a Deep Cycle 24RVDC battery purchase at two different locations because of stocking. I kept the batteries on a battery tender all winter. Now the Deep Cycle battery when on battery tender, the light won't go off. The Marine/RV battery will go off after a few minutes showing it is fully charged. By running both batteries in the trailer, did I damage the Deep Cycle battery. The light won't go off on the Deep Cycle after several hours. Has that battery gone bad. BiMart has a 1 year free replacement. Re the Deep Cycle and the Marine/RV not compatible or the Deep Cycle faulty?
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Old 08-31-2022, 03:20 PM   #2
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Join Date: May 2019
Location: Alton
Posts: 2,257
M.O.C. #24086
You could take the batteries back and have them tested.
When pairing batteries in parallel it is best if they are identical. OR very close in capacity and age.
Removing the batteries and putting them on a battery tender during winter storage is an excellent way to make them last longer.
Daryl and Marianne,
2019 3130re 20th Anniversary Edition
2016 F350 Lariat
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