I replaced my cranking battery this spring. The boat is also a 2013.
The 2 12 volt trolling deep cycles are interstates and we had them tested and they tested great still - seem to be still holding up great - so hopefully a few more years.
I keep my boat's pro charger plugged in all winter and all the time between trips.
Not sure why the cranking one tested poorly (hence the replacement) and the other two seem to be good still.
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