Mighty Max Battery MM-H6 Start and Stop Car BCI Group Size 48 12V 70 AH, 120RC, 760 CCA Rechargeable AGM Car Battery

If you are looking for a rock-solid, high-performance AGM battery that won't break the bank, the Mighty Max MM-G35 is an absolute home run. The difference in starting power is night and day.Here is why this Group 35 battery easily earns a full 5-star rating:🚀 Key Highlights & PerformanceFlawless Start-Stop Performance: This battery handles start-stop cycles effortlessly. AGM (Absorbent Glass Mat) technology is a must-have for modern, high-draw vehicles, and this unit manages the constant on-and-off cycling without breaking a sweat.Massive Cranking Power: With 650 CCA (Cold Cranking Amps), the engine turns over instantly and aggressively, even on freezing cold mornings. There is zero hesitation or sluggishness.Impressive Reserve & Capacity: The 55Ah rating and 100RC (Reserve Capacity) mean you have plenty of reliable power to run accessories, dash cams, and electronics without worrying about draining your main power supply.Built Like a Tank: True to premium AGM design, it is completely sealed, spill-proof, and highly resistant to intense engine vibration. You can install it and completely forget about maintenance, venting issues, or terminal corrosion.🛠️ Fit and InstallationThe BCI Group Size 35 form factor is a precise, standard fit. The terminals are cleanly molded, solid, and accept heavy-duty vehicle clamps perfectly. It has a reassuring weight to it, which is a great indicator of the quality and density of the internal lead plates.

The cost of this MM-G35 battery was a big factor in my decision to purchase it, as it costs literally half of what some of the big name brands do! I am a great fan of AGM batteries. I’ve used the “yellow top” brand in my heavily modified 2002 Silverado one ton diesel truck since it was just a year old. My first set (Diesel engines require two batteries) lasted an unbelievable 14 years! AGM batteries typically have a much greater service life than lead-acid batteries. I also use an AGM battery in my heavily modified 2005 Jeep TJ.So when my wife’s 2021 Subaru Ascent Touring was ready to a new battery, it was a no-brainer decision that I was going to purchase another AGM battery.The battery was delivered within 36 hours of my purchasing it with zero damage to neither the battery, nor even to the outer packaging. It also arrived fully charged and ready to install. The fit was perfect and installation took less than 10 minutes.I’m very happy to be done with my wife’s old lead acid battery and I hope she has many, many years of trouble free service from her new Mighty-Max battery. 😀Also, simply by registering your purchase, via the included QR code, the manufacturer’s warranty will be extended an additional three months, 👍I will also be adding a photo of the installed battery to this review very soon, as the warranty period will be increased by an additional three months by the manufacturer, just for doing so. 👍I’m very happy with this purchase and I highly recommend this AGM battery!!! 😀

If zero stars were available, that would be the right rating. Do not get tempted to save money and be stranded with no car for work or be able to pick up your kids. 1) Car would not start one morning after 4 months with battery. Had it jumped roadside (1.5 hour wait) and drove it for 30 minutes. Parked to drop off kids. It would not start again. Jumped it again with roadside (1 hr wait) and drove to shop. Uber to work. Shop tested, battery will not hold charge. Rent car to pick up kids and get to work until this is figured out. 2) There is no 'warranty' from Mighty Max. Just offer to replace after you have tested. Run that scenario: battery is dead and won't charge. They want you to have print out from retailer so, get it jumped to drive it to retailer. They say, this is used/refurbished battery. Stickers don't match. Only read out test they can give is Charge and Retest because the thing is dead./zero charge. Car won't start to drive home. Retailer won't let you leave it in lot. Get it jumped to drive home. Send results to Mighty Max. They say: please charge and test again. No. Car won't start again. Can't drive it. Mighty Max just says, we will send replacement no refund. Who wants this again?. Terrible con. Don't buy. My out of pocket for saving $100 = $250. Mighty Max should be ashamed.

I got this battery for my classic Mercedes sl500. It's trunk mounted, fit perfectly and works as expected. It was much less expensive than other brands.

A Group 31 AGM battery is appealing because it gives you more capacity and strong starting performance, which matters a lot if the vehicle has added accessories, audio, lighting, or other electrical demand. On paper, this looks like a strong value if you want solid battery specs without jumping straight to very high-priced options.Good fit for people who need more than a basic replacement battery.Pros:✅ Strong capacity and CCA specs✅ Good for higher electrical demand setups✅ AGM style is appealing for many builds✅ Nice value compared to some premium brandsCons:⚠️ Battery fitment and tray compatibility matter⚠️ Real-world value depends on use case and charging setupOverall, this looks like a strong battery option for the right application.

Perfect on time delivery. Correct size, car started right up, great value for the price, was easy to install and compatibilite with my car. Better than the factory OEM with more CCA for gfreat starting performance. Thank you Mighty Max and to the seller.

For a battery that is indicated as a replacement for my vehicle, it did fit, but is about an inch taller than stock. I was able to secure the battery hold down strap with a zip tie instead of the stock bolt. The plastic beauty cover over that area of the engine compartment doesn't sit properly, but for the price, this battery is a powerful replacement for the stock one. I don't spend time admiring my car's engine compartment, so I can live with the zip tie and the lifted plastic beauty cover. If the battery can't be secured with a zip tie, your car has serious suspension problems. I would definitely buy this battery again. I shopped around a lot, and this was the best deal. There's nothing better than ordering a car battery from Amazon and having it delivered to your door instead of dealing with the hassle of the auto parts store and their rediculous prices.

5 stars for the moment. I just received and installed it in my BMW. Perfect match and fit to the factory battery. Car now starts and runs strong again. Real question is how long is it going to last. I'll update my review if anything changes.

Todo bien

I have now installed this brand in my vt1100, f-150, and my wife’s equinox. The bike starts up first crank after sitting all winter. Both vehicles fired up last weekend when its was -38C outside. I will never purchase another brand. Keep it up mighty max!

Installed in my 2004 porsche cayenne working great so far

Excelente, funciona muy bien, solo tardo un poco más de lo que estaba programado

Muy buen producto