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The constant RECHARGING will shorten the life of the battery and prob will NOT be warrantied!
Deep Cycle batteries are meant to be drained to approx. 1/2 and THEN recharged and not constantly hooked to the the alternator like a regular auto battery. Think using it on a boat where it is used for a trolling motor or an RV powering the RV over a weekend THEN charging.
I would verify that the CCA listed is actual cold cranking amps and not MCA... Marine cranking amps which is just normal cranking amps in a starting battery.
If you're running accessories with the engine off a marine or deep cycle is fine, but they do not usually have to "oomph" needed to crank over engines in the dead of winter like a starting battery.
When I asked for a set for a 6.0L diesel at Batteries Plus
this is the one they recommended over the Optima YellowTop. They sell both.
I was told that the engineers from Optima left and started
there own line and this is there answer to the Yellow Top.
I know that this was a salesman talking even if he is a
car battery specialist. So Tuesday I will give them a call and
get some info from the horses mouth.
Maybe the Optima guy will chime in on this.
Both options are $$$$ and then add a new DC Power alternator https://www.dcpowerinc.com/ to the mix and we are talking
some big $$$
In the past I have had good luck with Ford and Sears batteries.
I just keep them clean. filled and charged. They will treat you well.