$84.99

MM-AUX12 Auxiliary Battery 12V 12Ah, 20RC, 200 CCA Rechargeable AGM Car Battery

SKU: MM-AUX12 Category:
Thumbnail Short Description Price Add to Cart Button
1 Pack $84.99
2 Pack $159.99
4 Pack $299.99
When your vehicle’s systems demand dependable backup, the MM-AUX12 delivers. This AGM battery is engineered for real-world performance in real-world conditions.  With 200 Cold Cranking Amps and a 20-minute Reserve Capacity, it holds its own in cold starts and keeps critical systems running when the main battery is resting.
The sealed AGM design keeps it maintenance-free and spill-proof. It’s built to resist vibration and recover from deep discharges without skipping a beat. The MM-AUX12 is all about durability, consistency, and zero-nonsense power.
Whether you’re replacing a dead battery or upgrading to something that won’t quit, the MM-AUX12 is ready to go to work. No mess. No maintenance. No downtime.
This is power with purpose, and it’s ready when you are. Are you powered to the max?
Detailed Specifications: 
Voltage: 12 Volt 
Amperage: 12 AH 
Chemistry: SLA, AGM 
Battery Size: 5.93 in x 3.50 in x 5.75 in 
Weight: 10.50 Lbs 
Warranty: 3 Years 
Multi Packs Bundled Savings

1 Pack, 2 Pack, 4 Pack

Volts

12V

Amp Hour

12Ah

CCA

200

Chemistry

SLA / AGM

Quantity

1

Length

5.93

Width

3.50

Height

5.75

Weight

10.50 Lbs

Warranty

3 Year

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Excellent
Mighty Max Battery
Based on 5035 reviews
Needed new battery for my Rancher ATV. Mighty Max Battery YTX14-BS GEL had great Amazon reviews. Was exact one needed and arrived as expected.
Looks intact, still to use. Adding review to get 3 months extended warranty. 😀
Perfect fit, well packaged, arrived as promised!
Came a day earlier than predicted with a scan QR code for quick registration!
YTX20L-BS Mightyax fit right in my 2002 Harley Davidson Heritage Softail and cranked the bike after sitting idle for 6 months. Great battery.
Charli's jeep.......works great!
Like new
Thx
Perfect fit replacement for OEM battery. 2 minutes to replace.
Arrived on time, works like a charm! I registered the car purchase to claim the warranty! Here’s a pic of the neuron cordless electric mower I bought the two 12 volt mighty batteries for! The orange case was easy to open, used 3d from smallest Allen wrench in my kit to open in order to swap out the 2 old batteries inside the case with MIGHTY BATTERIES! Then gently remove the chip in the center freely slides off then slide the old batteries out 2”inches to remove the u shoes tube in the center just pulls off., after that the batteries are free to remove from case, the rest is simple Just a reminder to remove the plastic protectors on the posts of the new batteries and don’t let the the chip you slip out touch the posts. Easy for a lady with a tiny correct size Allen wrench. Just borrow one and do this yourself.

Next I’ll add a solar panel so the sunny days will charge my mower.
I ordered my Mighty Max battery from The Home Depot and opted for free delivery. The battery arrived a few days later and was very securely double boxed. I installed the Mighty Max battery into my Cub Cadet zero turn lawn mower with minimal difficulty. The terminal leads connected with ease. The only concern (not really) is the mowers original battery hold down is too small for the Mighty Max, so I opted to omit it. The battery fits perfectly in the tray and as long as I don't do any barn storming jumps, it'll be fine. The mower started right up and I am confident the Mighty Max battery has more than enough cold cranking amps to last for a long time.