Mighty Max Battery YB16CL-B Jet SKi ATV Polaris Yamaha Kawasaki Sea Doo Bombardier Brand Product

Quick delivery and worked like a charm.

Came with in a four days of ordering it. Came sealed, so no need to add acid. Have one for my Yamaha jetski and bought it two yrs ago. And it's still holding a charge. So I ordered another for my Polaris jetski.. it's a lot lighter in weight than the Walmart brand.

3-31-19 OK so went down to the dock after a winter where the lake froze over. Pulled the choke and the Skii turned right over. So this battery sat without a charger for several months in temperatures down to 0 and still was charged enough to start the Skii. This battery got a work out over the memorial Day weekend. The jetski was having issues and required a lot of constant cranking. This held up, didn't get hot and is still kicking.

Don’t waste your money!! I bought three of these batteries from Amazon in July of 2025 and I’ve been using them in our jet skis since then every other weekend. 2 of the three batteries will no longer start my JetSki’s even after a trickle charge from a quality battery charger, and the third one will only start the JetSki if I charge it before I go. My last batteries were the same type of 16cl battery and lasted 3 seasons and never needed to be recharged other than at the start of the season. Now I can’t return these even though 2 months of usable service is unacceptable and indicates some type of defect but too much time has gone by and the manufactures website is not letting me submit my issue or getting back to me. Ended up charging my old batteries and using them as they actually work fine.

Very good battery

I replaced my PWCs' aging lead-acid batteries with this AGM variant (installed in a 2017 GP1800 and 2013 VXR), and overall, I'm happy. They're lighter, they should theoretically last longer with less intensive maintenance, and a breather hose is no longer essential since it doesn't need to be ventilated. The price is great, too - even less than a traiditonal lead-acid battery. So why the four stars? Well, cranking amps seem to be a bit lower on this battery, and the ski cranks notably slower when starting on this battery. It's not that big of a deal, but there's nothing more satisfying then the quick "chug, chug" sound of a starter motor rapidly firing up an engine, and this battery just delays my time on the water by .0003 seconds by starting it slower. Maybe I'm being too picky, but I've always associated a quick start with a healthy battery.

Have bought before and was satisfied enough to buy again

I like the fact that this battery is sealed so I will never have to take it out to check the acid levels. It's a pain to remove the battery from SL 780 Polaris. I connected battery tender wires to the battery so I can keep it fully charged when not in use for an extended period. So far it works fine and starts every time. Hopefully it will last 2 or 3 seasons.