I have a sealed 12V marine deep cycle battery that I use for deep dropping with my electric reel. Ninety nine + percent of the time it sits in my garage on a battery saver (smart trickle charger). My question is, "What should the life expectancy of the battery be under these conditions?" I don't want to go offshore some day and find that the battery is dead and won't hold a charge.
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Some authorities say that for every 15 degrees above 77 degress F. battery life is cut in half.
I've also considered a mini-split A/C unit just for my garage since it's my workshop as well as where my skiff sits and it does get cooking if I don't have the garage door and side door wide open when I'm working there (tying flies, making lures, building and repairing fishing rods, reels, etc.). Add to that the much needed maintenance on my guide skiff (Use a boat hard and something always needs fixing...) and over the years I've often considered a stand alone A/C unit for my garage... just to keep it reasonable...
Bob LeMay
(954) 435-5666
Back to the battery, it is already 4 - 5 years old and is still going strong, which is one reason I posed the original question. I guess as long as it takes a charge and the battery conditioner indicates that it is good I'll continue using it.
Bob LeMay
(954) 435-5666
You might consider a dehumidifier in your garages instead of an AC.
It's not really the heat that causes problems, IMO, but rather the humidity in combination with the heat, and a dehumidifier is typically easier to install and cheaper to buy and run.
No idea about the lithium batteries, they are just pricey.
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Wilson Yacht Survey, Inc.
We had golf cart batteries on the Mischief we lived on and got 5 years out of them. I attribute the lifespan to they had their own compartment away from engine heat and were sitting on the hull (cooled by water).
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