I use Walmart batteries in all my boats.
They are cheap but they will fail at the moment their projected life cycle has ended.
Unless...
you keep a solar charger on the battery and/or...
have a battery switch that shuts off all battery drain when the boat is not in use.
Some situations do not allow for this.
They last at least twice as long with this care.
In that case, I might try a more expensive and hopefully better brand.
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