Odyssey Battery ODX-AGM31 Extreme Series AGM Battery

I charged these bad boys up and they started my big ol’ RV right up. In fact, my RV sounded like it was extra revved like it never felt better. Very glad to have bought these. Expensive but no maintenance and high quality means less money over time.

Personally wont use any other brand. These are exceptional build quality with outrageous lifespans next to other agm/SLA batteries. Worth the $

I changed out the bank on my Freightliner after over 10 years and probably could have gone another 2 years but I transferred them to my inverter bank since I don't need a lot of capacity for that setup. I also have smaller odyssey batteries in my SXS, quad, and dirtbike. It's the standard brand on most sandrails because they are the best.

I would give zero stars if that were an option. Installed one of these in my Lexus GX470 so I would have plenty of oomph whenever the onboard air or winch is used. Vehicle is driven once or twice weekly without fail. 11 months after purchase, I went to load up to go deer hunting. and noticed the keyless entry wouldn’t unlock the doors. Figured it needed a fresh battery and just used my key. Rig was completely dead. Battery showed under 6 volts. Tried to revive it with a charger and got to 6.1 volts. Ugh. Filled out the warranty info through their website and the next business day they notified me saying warranty was declined with no reason given. After dropping nearly $500 on this battery, I only wish they were closer so I could ‘return’ the battery personally. Absolute garbage company.

I bought two group 31 agm odyssey batteries for my boat. Original batteries were 2 8D lead acid marine batteries that never lasted more than 3 seasons before they could no longer crank my 6-71 detroit diesels. Replaced those with 4 of another brand of group 31 agm batteries and they lasted 7 years. Replaced those with two Odyssey group 31 batteries. My engines never cranked faster. You get what you pay for with these units. These two batteries are performing better than the 4 AGM 31s' that they replaced.

Avoid this item at any cost. Company is crook. When I purchased the product was mislead from 5 year warranty. After several weeks batteries started making problems. Company does not stay behind the warranty. This product is garbage. Stay away if you do not want ot be burned. Preparing to fill complaint with FTC, General Attorney and possible lawsuit. If you do not want problem. Runaway. This is total scam. Cheap probably flood batteries packed in fancy package to fraud people. My advice stay away.

This company does not honor any warranty. Buyer be aware.

These batteries are HEAVY, let's you know you're dealing with the good stuff, not lead plated like the cheaper ones..

I don't arrive when amazon says it will, it's heavy so it's shipped with a 3 rd party carrier, and you will never find a better battery, or a heavier one .