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⚡ Power your ride with confidence—never get left in the cold!
The Mighty Max YTX9-BS is a 12V 8AH sealed lead-acid AGM battery delivering 135 cold cranking amps for reliable starts. Its maintenance-free, spill-proof design resists shocks and vibrations, fits universal scooter and mower applications, and comes pre-charged with a 1-year warranty for hassle-free performance.





| ASIN | B00K5391N4 |
| Automotive Fit Type | Universal Fit |
| Battery Capacity | 8 amp_hours |
| Battery Cell Composition | Lead Acid |
| Battery Type | Lead Acid |
| Best Sellers Rank | #2,271 in Automotive ( See Top 100 in Automotive ) #10 in Powersports Batteries |
| Brand | Mighty Max Battery |
| Brand Name | Mighty Max Battery |
| Compatible with Vehicle Type | Scooter |
| Customer Reviews | 4.4 out of 5 stars 2,110 Reviews |
| Included Components | Battery |
| Item Dimensions D x W x H | 5.9"D x 3.38"W x 4.25"H |
| Item Type Name | 12V 8AH 135 CCA Battery |
| Item Weight | 6.4 pounds |
| Manufacturer | Mighty Max Battery |
| Manufacturer Part Number | YTX9-BS98 |
| Manufacturer Warranty Description | 1 Year Warranty |
| Model Number | YTX9-BS98 |
| Number Of Cells | 6 |
| Number of Items | 1 |
| Resistance | 144 ohm |
| Size | 1 Pack |
| Terminal | Bolt Terminal |
| UPC | 850005902041 082045853384 |
| Vehicle Service Type | Scooter |
| Voltage | 12 volts |
G**K
Fantastic 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
M**N
Questionable dependability
Received the battery and it ended ul dying on me, I contacted the company and got a replacement within no time!
K**.
Reliable Replacement Battery
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.
C**.
Does the job, died after 2.5 years.
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.
D**T
Good value
Great value, unit came fully charged ready to go. Perfect fit
I**H
So far so good
Initially sent me what looked like a used defective battery. The day after I put in for an exchange I received a nice functional battery that works great in my 600 cc road bike.
C**R
Battery arrived with damaged terminals and unable to take or hold a charge.
Battery arrived with both lead terminals bent and unable to accept a nut. In addition, the battery was discharged and not able to take or hold a charge. I bought this for use on a generator at a remote cabin and did not inspect the battery until I was on-site, and the return windows is now closed. I would suggest going with a different option for this type of sealed lead acid battery.
J**E
Mighty Max battery
Great battery. I have one in my riding lawnmower & on my motorcycle. Holds a charge very well, excellent warranty, very good price & perfect fit. Will definitely continue using them for any applicable future needs!
A**A
Good battery. 2 years work good.
I installed this battery on my Honda XR 650l. Everything works great, and the seller communicated very well with me. I respect that.
A**N
Lo recomiendo
Lo compré para mi vento 300 sportivo y funciona muy bien.
T**A
Perfecta
Funciono perfecto en mi KAWITA Z900. Creo que es mejor que la original y cuesta 10 veces menos xD
W**T
Good battery
Great ride a mower battery
M**O
Hasta el momento todo bien
Me salió bastante bien tengo una ktm 390 adv que solo ocupo de lunes a viernes, los sábados y domingos se queda parada y en casi 1 año 5 meses no me ha fallado muy bien producto
Trustpilot
1 week ago
2 weeks ago