









🔋 Power your hustle with the battery that never quits!
The Mighty Max ML18-12 is a 12V 18AH sealed lead acid rechargeable battery featuring UL certification, maintenance-free AGM technology, and a compact design. Engineered for deep cycle use, it delivers reliable power with high discharge rates, wide temperature tolerance, and resistance to shocks and vibrations—ideal for professionals demanding durable, long-lasting energy solutions.





| ASIN | B00K8E4WAW |
| Amperage | 18 Amps |
| Batteries | 1 12V batteries required. (included) |
| Brand | Mighty Max Battery |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,725) |
| Date First Available | January 1, 2010 |
| Item Weight | 6.7 pounds |
| Item model number | ML18-1221 |
| Manufacturer | Mighty Max Battery |
| Manufacturer Part Number | ML18-1221 |
| Model | ML18-1221 |
| Product Dimensions | 7.12 x 3 x 6.5 inches |
M**E
Great battery
Bought this battery 5 yrs ago. I use it for my electric fishing reel. It still works fine. I keep it charged up and it lasts all day. Solid battery. Worth it. I'm getting another one.
J**C
Small and handy.
Arrived on time. Undamaged. Worked. See how well it holds a charge.
C**S
Good Qaulity Battery
Purchased in 2021 still a string battery.
A**R
Stanley Fat Max fix
This battery works better than the one it replaced when it was new. Perfect fit for a Stanley Fat Max ari compressor, battery jumper box, light a& USB charging port.
T**M
Works Great
Much less expensive than the basically same size battery sold by my local Haror Freight. Started my generator right up. I keep it on a trickle charge, so hopefully it will start right up if & when I have an extended power outage here in FL. It's supposed to be a terrible hurricane season :-(
A**L
Great for my purpose - replacements for Power Wheels batteries
I bought two of these to use in my kids' Power Wheels vehicles. The Power Wheels (a Jeep and a Mustang) were some yard sale "finds" - the vehicles were ok, but batteries were worn out. These Mighty Max batteries are a tight fit, but DO fit. No surprise, but to use them for this purpose, you need to do some minor, very basic wiring. If you are so inclined, I'd recommend you check YouTube for instructions. I chose these specific batteries for several reasons. The "nut-and-bolt" terminals allow for very secure connections to the battery. The provided dimensions told me they should fit. The sealed AGM format means they can be mounted safely in any direction. I liked that these are advertised for their long life and capacity to recover from a deep discharge. (I was concerned that my kids would run these past the point they "should" be stopped and recharged.) Also, these are 18 amp-hour batteries, almost double the 9.5 amp-hours for the Power Wheels factory batteries. That extra capacity means I probably won't see any deep discharges - in long play sessions, my kids barely made a dent in the charge (as indicated by how little time my Battery Tender charger took to recharge them.) For me, these were a great deal. Two batteries for about $70, plus a few dollars for wiring connectors and fuses; they have nearly double the capacity, and they now can be quickly connected to my Battery Tender. At the time, a factory Power Wheels battery was running about $60 (and I needed TWO). Thank you, Mighty Max! So far, so good! I expect to get a nice, long service life from these. VERY happy customer.
J**M
Last one lasted 9 years.
Last one lasted 9 years before APC UPS declared it bad. Sticking to same battery due to long life.
I**!
I needed a small 12 V DC for my hydroponic garden
I use this battery to run a small 12 V DC water pump that circulates water in my hydroponic garden. The battery is charged by a small (50 Watt) solar panel. Water is stored in an attached 5 gallon bucket on the A frame hydroponic garden and keeps the plants in water. The battery arrived quickly and was charged. It was well packed and when I installed it using the solar panel for charging it ran the little pump nicely. I put the battery in a weather proof container and strapped that to the A frame hydroponic garden system I have. I have had this for several weeks now and have discovered on very cloudy / overcast days the battery may not get fully charged. I don't think this is an issue with the battery or the solar panel since everything works again on the next sunny day.
L**S
Worked good.
D**N
Pour un chatg
S**R
Took out the old battery and substituted this exact clone. Moderate skill level, saved my $200 booster and like new output. Won't fit all boosters, check battery specifications first. Order the right amp/Hr. Volt type
J**T
So pleased it arrived when it was expected. Was about 5 mm too tall, but managed to get it in.
J**T
Pour moi-même
Trustpilot
3 days ago
2 weeks ago