









⚡ Stay powered, stay unstoppable on the water!
The Mighty Max ML55-12 is a 12V 55Ah sealed lead acid deep cycle battery designed for power boats and electric trolling motors. It features a spill-proof AGM design that delivers high discharge rates, wide operating temperature tolerance, and long service life. Maintenance-free and UL certified, it offers flexible mounting options and comes with a full one-year warranty, making it a reliable choice for extended water adventures.






| ASIN | B00K898AT6 |
| Amperage | 55 Amps |
| Automotive Fit Type | Vehicle Specific Fit |
| Batteries | 1 12V batteries required. (included) |
| Battery Capacity | 55 Amp Hours |
| Battery Cell Composition | Lead Acid |
| Best Sellers Rank | #288,389 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #291 in Trolling Boat Motors |
| Brand | Mighty Max Battery |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,667) |
| Date First Available | January 1, 2010 |
| Item Weight | 36.7 pounds |
| Item model number | ML55-121911139 |
| Lift Type | 12v |
| Manufacturer | Mighty Max Battery |
| Manufacturer Part Number | ML55-121911139 |
| Model | ML55-121911139 |
| Number Of Cells | 6 |
| Product Dimensions | 9.06"D x 5.43"W x 8.98"H |
| Size | Standard |
| Terminal | F2 Terminal |
Z**D
Great Battery!
Have used this battery multiple times this summer. It is great. It works flawlessly with my 46lb trolling motor. After being out on the water trolling for 2-3 hours it still has nearly a full charge. I had good luck with the Might Max 35AH battery but this 55AH is so worth the extra $40.
C**E
Excelente batería , la utilice en un bote inflable y motor electrónico. Nos dio 4 horas de diversión.
A**R
Battery
Bought this for a 4 person blow up raft. It worked great but is very heavy.
G**S
solid product
I bought this for my kayak for which I have built a transom to add a trolling motor (I will often go out for a long 3-4 hours day and like to be able to add some motor power). The motor is a Newport electric motor with 35 lb. thrust capability. I have used that motor at highest speeds for about 1 1/2 hours often pulling a tethered kayak and the battery has only dropped from 13.2 to 12. 2 volts. (they recommend to not go below 11 volts) However, it is heavy!! At first I had it placed behind me, but between my weight and adding battery weight to the back in addition to the weight of the motor, I only had about 1 inch leeway before the kayak would have gone under. I now place the battery in front of me and it fits perfectly between my legs as they are spread to the footholds in the kayak.
R**N
Powered my 36lb Trolling Motor for Hours
The battery came nearly fully charged (there was some discharge from being off charger, but nothing significant). It powered my 36lb thrust trolling motor roughly 4 hours at full power - pushing a 13' fully loaded fishing kayak with 15-20mph winds, and 4' - 5' waves. I wish my adult diapers worked as good as this power cube. The battery box says that there is still over half a charge left. That's pretty impressive for the price. I'd buy it again and suggest it to a friend.
J**P
Works great, just charge it up
Batteries just fine. Don’t take it right out of the box and use it or you’re gonna be disappointed. You have to put it on a trickle charge until it’s 100%. And I would definitely recommend their recommendation of not taking it below 25%. This is not off the cuff advice, I’m 58 and my daddy was a mechanic so I know the drill. JTP
J**O
Great for CPAP power supply while camping and charging digital devices
I bought this battery as a 12 volt power supply for my CPAP. When fully charged I found that I can use it for at least four nights, 8 hours each night on a single 100% charge while boon-docking while out in my camper. To use with a CPAP be sure to get the proper 12 volt DC power supply cord recommended for you brand and model of CPAP. My CPAP cord came with a male cigarette plug attached and all I had to do is plug it into a female cigarette plug with alligator clips like this one https://www.amazon.com/BESTEK-Cigarette-Lighter-Battery-Extension/dp/B00JOY6U7U/ref=sr_1_5?dchild=1&keywords=12+volt+cigarette+female+with+glipes&qid=1598816232&sr=8-5 . Be sure to test it out at home before you leave to make sure it works properly. I also used it to charge cell phones and other digital equipment while boon docking.
K**7
Powah
This baby is chock full of power and only cost a hundred paltry American bucks, none of which made their way into the hands of the poor slaves in the third world where the minerals to manufacture it were mined....by children. Kids have sneakers to make, and minerals to mine, we use fossil fuels to do both, save the children.
R**N
The first battery did not hold the charge but we were sent another right away.
P**S
There was a hole cut in the box around the positive post, the area was covered in something brown and the post had been either cut or broken off the battery
F**E
Great marine battery,works well.
G**N
Très satisfait de cette batterie pour l’instant.
Trustpilot
3 weeks ago
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