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post #3 of Old 07-13-2018
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Re: Battery

First thing is to analyze your electrical usage on the boat. I assume on a 22' boat the power usage will not be great but that depends. Will you be running a stereo, cabin or navigation lights, GPS, plug in cooler? Will you have a motor that is electric start?

Second, due to the size and space restrictions of the boat it will be impractical to install a really large battery bank. So, assuming you won't have an electric start engine and not too many of the options mentioned above I would look for a 12V, Marine deep cycle battery that will fit in the battery space that is probably on the boat.

Before anyone jumps in to yell, that battery will not be a true deep cycle like a Trojan T105 but I don't know of any true deep cycle batteries in the size you will fit in a 22' boat so that will be your best option.
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