NAPA sells a marine cranking and a deep cycle battery.
I bought their cranking battery a little over 4 years ago, and 2 deep cycle batteries that will be 4 years old in Aug.
All 3 seem to be going good and no sign of weakening. About twice a year I check the acid level, and add some water. When I get home from a trip, I hook up the charger until the next trip.
I think I paid about $ 90 each.
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