How many years are you getting out of them now? I used to buy new ones at the 5 year mark no matter how good they still were. Lately I am lucky to get 3 years before they go belly up. Last time out my trolling motor quit after one hour. I had the batteries checked on the way home and two of them were graveyard dead. They are barely 3 years old.

Additionally the batteries I have been using are now $450 each. I am definitely switching brands.

How is your luck with batteries?

Right now I'm using Duracells AGM and they are going on 5 years. After that I will switch to Lithiums.

To keep it brief, I now use a battery service company. They rebuild batteries and distinguish the difference for me between what they call thin plate batteries and thick plate batteries.

The thinner plate batteries don't hold up as well as the thicker plate batteries do. I was told with the thin plate batteries that holes can be burned right through the plates inside the batteries.

Point is, we out here in the consumer market can't always tell what we are buying. So I no longer buy new retail. Using the battery company puts me into the better quality batteries, and mine are all reconditioned batteries now.

Battery companies like the one I use service commercial accounts like forklifts, bulldozers, dump trucks, etc. so they deal with heavy duty batteries every day and that is basically what I want in my cars and boat. And they are much cheaper than new retail too.

I get on average 4 good solid years on a reconditioned battery. And the auto batts are only $50 and the marine trolling motor larger batteries are only $60 each so I can't beat the price for what I am getting.

And they pay me for all my old batteries so that saves me even more. And they also have become a free safe battery disposal place for me for batteries like lithium ion, etc.

I run Optima Blue tops.

5 years is about average when I'm on the water my normal amount.

I think the charging system is important as well as how far they get drawn down each time. Recharge quickly and maintain properly is about all we can do.

I have 36 v plus the starter all maintained by a 10 yr old Dual Pro Quad.

Sadly I'll be due for battery replacement next year.

A-Jay

Got just over 3 years out of Duracell Platinum AGM's, but I ran them hard....under 30% frequently on an electric only lake. Made the switch to LiFePO4 after.

Learn how to check your own batteries. It’s not difficult. You can get an ohm meter at Bar or Freight for under $20. No more guessing at the condition of your batteries

I've got 3 years on my Dakota 100Ah in my kayak that gets ran hard all year round in a variety of conditions and it will still run my motor for a couple days without charging.

I always replaced my trolling motor batteries at 4 years old with ones I bought at Walmart