I've been buying Batteries from Napa...but they've recently cut their warranty

Got a duracell battery on the mower, this will be it's 5th year but i bring it in the house for the winter. As for boats, check out the lithium battery's that are out now. Real light compared to the old marine battery's, pricey too. I use them to run camera's on my hog traps.

Spend up and put in an AGM (absorbed glass mat) battery and not a disposable lead acid battery. The vibration and constant jarring will usually cause the plates to touch in an acid battery. You lose a cello and it no longer has 12 volts. That’s what causes slow or no cranking ability.

I ran the same AGM battery in my motorcycle for 13 years. A typical acid battery would have needed replacement by the 3rd summer.

Off season maintenance/charging/storing/ are key. I get about 6 to 8 years on the cheaper brands.

factory bactory on my jd zero turn, no problems yet. my 4 wheeler cant keep a battery for 6 months...

All batteries suck eventually, but they're great until they aren't.

This ^^^ many will freeze in the colder climates due to lack of use. For the $40 cost having an extra one sitting around is a cheap investment for me.

Walmart... 2 years... repeat.

All of the marine batteries I've ever bought has died in under a year. Now I just buy regular car batteries and they last a few years.