Really depends on use. We burn them down pretty hard but only couple months a year. Never an issue. Don't need receipts anymore, they scan barcode. Even easier to take back. If you can afford it, Duracell agms from Sam's is the way to go

RedSkeeter, What brand of AGM do you use?

Optima blue top. Did up the cranker to a 27 series because of graphs,live wells, lights and so on. Other 3 are 24 series the drop off in reserve and amp hours, etc.. is minimal compared to the 27 series. The weight is significantly less FYI.

I have a ever start max group 29 that holds a full charge and lasts all day that was manufacturered in March of 2011.....

I bought 3 batteries this summer � Walmart's Maxx 29 series. They replaced 4-yr old Maxx batteries that actually had some life left, but changed anyway. For the price of these, I'm happy.

I use 3 exide group 31s from home depot or academy, available at both for 109.99 and I use a group 31 exide AGM Mega start from academy for cranking, 235.99 if memory serves me correct. Excellent batteries.

Go to Sam's and buy Duracell. They are Deka batteries rebranded and still made in the same place. One of the best batteries out there. Great prices too. Can't beat them!

I also have been using the Walmart batteries for at least 15 years. The only problem I have run into lately is when I take one back for warranty they want the original receipt not a copy. So I keep the originals in my truck and a copy in with my house receipts for sale tax on income tax time.

And they test the heck out of the bad battery before giving you a new one.

Exide from Academy... Great batteries and cheap!

if you don't have a Sam's card . Battery plus has them look for sales

Check out battery manufactures a lot of company's batteries are made by the same people just a different label. Talking bad about one chains battery and it is the same battery with another name.

I have a set of (3 troll, 1 crank) in my boat with 6 years on them and still working fine. Just replaced a pair in a 7.3 Super Duty that were 8 years old.

Cheers,

George

they suck

My feelings exactly.

Did a little research and found this
I worked at Delphi battery plant for 5 years before it closed and I moved to the car plant building car and marine batteries so this is one of the few topics on a bass fishing site where I know what I'm talking about.

I loved when I told people where I worked and they would give there opinion on batteries. Some loved our AC Delco batteries others said the would only use a sears die hard. Some said they just went to wal mart and bought the cheap everstarts. Well I can tell you they are all good because we built all 3 brands. When we finished a run of AC delcos they would swithch the label machine over to sears brand and start building die hards.

I always felt the walmarts were the best because when we switched to them we had time to go get a drink because they had to change to a grey case. That was the only difference.

I cant speak about AGM batteries never seen the inside of one but I can promise if it is a lead acid battery any 550 cranking amp battery by any company is going to be nearly exact.

When I was there the big 3 was delphi,excide and johnson controls. We swapped contracts back in fourth all the time one day we were building batteries for Catipillar then we'd get outbid and excide would build them. A year later we'd outbid and get them right back.

Buy the cheapest 29 group batteries you can find for trolling motors and highest cranking amps for big motor you can and youll be fine.