Mighty Max Battery YTX9-BS -12 Volt 8 AH, 135 CCA, Rechargeable Maintenance Free SLA AGM Motorcycle Battery

This thing is great, especially for the price. The picture made it seem like a cheap knockoff, but it works better than the original battery I had in my riding lawnmower mower. Plus, it has lasted longer than the original battery as well

I was really excited when this Mighty Max Battery arrived because my old lawn mower battery had finally given up on me. It slid right into place with no issues at all and fit perfectly in my mower. Once I switched it out, my lawn mower started right up and ran like it was brand new again. I mowed my entire yard without any problems and the power stayed strong the whole time. This battery has made lawn day so much easier for me. Highly recommend it if your mower battery needs replacing.

perfect replacement for my go kart. i first went to an auto parts store and the cheapest AGM battery of the exact specs as this was $110. this battery not only worked perfect, was super easy to install, and even came with brand new bolts for the terminals and its an amazing price. i will def buy again if i need another.

Purchased 11/21/23, Died 4/19/26. Pretty good for the price, a little weak starting when cold but never let me down. Would have bought a second one but I'm a daily commuter (On a Suzuki DR650) and the shipping speed was a little slow.

I use this for a Champion Workhorse clay thrower without the wobbler. It came charged, but I put it on my charger anyways, and it turned off almost immediately. I have no clue how many clays it will throw, but me and my brother threw at least 100 clays, and when I got home and put it on my charger, it was fully charged in about 1 minute. I probably could have gotten an even smaller battery, and been just fine.

My go to brand for small AGM batteries, love these! They always work and fit just as they should. This one is going in my duke390 motorcycle

Update: After trying to revive this battery, it was deemed to have a bad cell. Very unfortunate this didn’t last. Bought August 2025 and it died out 6 months later. Even had it trickle charging and couldn’t revive it. Bought for my cumins generator. Worked great when I got it but it didn’t last.

Fully charged right out of the box and the low price for an agm battery 👌

After a year its still working good, starts my CBR600RR no problem and I don't keep it on a charger over the winter

Llegó con buena carga, al parecer funciona perfecto en estos 8 días

Came fully charged and fit perfectly. It was a little difficult to place the "nut" high enough within the post cavity for the screw to start and grab the thread, but I solved it by adding a small piece of electrical tape beneath the nut to rise it up a little.

Lo compré para mi vento 300 sportivo y funciona muy bien.

I refreshed all my atv batteries with Mighty Max. one of them was bad. Contacted the company and had a replacement out the next day. Thats the measure of a company - how they treat you once they have your money. The company was great. The batteries are working great in my atv's snowmobiles and lawn tractors.