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ClimberKev
Member
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# Posted: 29 Jan 2013 09:42am
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I've been using seven Marine batteries for eight years (primarily weekends) at our cabin. Most of the energy goes to a composting toilet fan, tv, lights etc. I haven't had any problems. Are deep cell batteries really better? I know they have heavier plates and can be charged and discharged more often. I just wonder if anyone has done a true cost comparison...more deep cell batteries vs. fewer marine batteries over time.
Charge controller and Inverter
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Marine batteries
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Dillio187
Member
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# Posted: 29 Jan 2013 10:16am
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6V golf cart batteries aren't much more expensive than marine batteries, and they are easier to series together so they charge evenly.
In short, yes, they are much better.
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MtnDon
Member
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# Posted: 29 Jan 2013 10:18am
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If you have 7 years out of a Marine Battery then you must be the luckiest man alive. Or you actually have more battery capacity than really needed and thus never take a deep draw on them. I know people who have killed 8 to 12 Marine/RV batteries in a year. They both now run golf cart batteries and are into their second or maybe third year.
So whatever you are doing it is working; keep it up.
I try to be careful with system sizing and use but never managed to get more than 2 to 3 years out of Marine/RV batteries. After doing that a few times I switched to golf cart; this was in an RV. The GC went 6 years and then we sold the RV.
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ClimberKev
Member
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# Posted: 29 Jan 2013 12:16pm
Reply
Thanks MtnDon, I guess I keep going until they stop working. I'll take a look at the GC batts when I need to.
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