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Marine Battery Question: Any Help Appreciated
Posted on 3/20/20 at 4:49 pm
Posted on 3/20/20 at 4:49 pm
I've an Exide Deep Cycle Marine battery purchased from Academy 3 years ago. I checked the acid level and each cell was a little low. I refilled each cell with distilled water. I then placed it on fast charge(25 amps per hr)and it began drawing 40 amps.
It charged up until drawing 20 amps and stopped. Then the battery just continued to get hot on the sides, so I stopped charging it. Any ideas why it won't fully charge? Is the battery bad? This is my first experience I've had with deep cycle marine batteries. It has only been used with a trolling motor, it isn't used to start the outboard.
It charged up until drawing 20 amps and stopped. Then the battery just continued to get hot on the sides, so I stopped charging it. Any ideas why it won't fully charge? Is the battery bad? This is my first experience I've had with deep cycle marine batteries. It has only been used with a trolling motor, it isn't used to start the outboard.
4
Posted on 3/20/20 at 5:07 pm to boudinman
Used its max life, delco or Duracell
Posted on 3/20/20 at 8:53 pm to boudinman
quote:there's your best clue. if you didn't keep it on a float charge, those cells are going to be heavily corroded at this point and thus the battery is pretty much gone. The avg battery lasts about 3 years, and that's for batteries that are kept charged.
3 years ago.
Also, it's better to do slow charges than fast charges in general.
when you replace that battery, do not ignore the importance of a float charger. a float charger will protect the cells a lot longer. Even a dinky solar charger is far better than nothing.
This post was edited on 3/20/20 at 8:55 pm
Posted on 3/21/20 at 7:09 pm to boudinman
Just replaced 3yr old Dekas TM batteries. Replaced with gp31 AGMs with new charger. 3yrs for me seems to be the norm.
Posted on 3/21/20 at 9:33 pm to boudinman
Went with a Walmart Everstart Maxx 800 cca. Has 2 year warranty. I am currently charging it up completely then will place on a trickle charger.
Posted on 3/22/20 at 12:38 am to boudinman
Boy I can't wait for solid state 12v batteries! 
Going to be a long wait. 
Going to be a long wait. 
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