MM-H5LI Lithium Car Battery LiFePO4 12.8V Automotive Start-Stop Compatible Replacement 700CCA 62 RC 27Ah Group 47 Built-in BMS, Lightweight, Long Cycle Life
MM-H5LI Lithium Car Battery LiFePO4 12.8V Automotive Start-Stop Compatible Replacement 700CCA 62 RC 27Ah Group 47 Built-in BMS, Lightweight, Long Cycle Life
MM-H5LI Lithium Car Battery LiFePO4 12.8V Automotive Start-Stop Compatible Replacement 700CCA 62 RC 27Ah Group 47 Built-in BMS, Lightweight, Long Cycle Life
MM-H5LI Lithium Car Battery LiFePO4 12.8V Automotive Start-Stop Compatible Replacement 700CCA 62 RC 27Ah Group 47 Built-in BMS, Lightweight, Long Cycle Life
MM-H5LI Lithium Car Battery LiFePO4 12.8V Automotive Start-Stop Compatible Replacement 700CCA 62 RC 27Ah Group 47 Built-in BMS, Lightweight, Long Cycle Life

$229.99

MM-H5LI Lithium Car Battery LiFePO4 12.8V Automotive Start-Stop Compatible Replacement 700CCA 62 RC 27Ah Group 47 Built-in BMS, Lightweight, Long Cycle Life

Availability: In stock

SKU: MM-H5LI Category:
The smart lithium upgrade for everyday vehicles is here. When your engine demands performance, the Mighty Max MM-H5 Li delivers without hesitation. 
This Group Size 47 lithium battery stands ready with dependable starting power for the conditions drivers face every day. With 12.8V, 27Ah, 700 Cold Cranking Amps, and a 62-minute Reserve Capacity, it provides strong starts and the endurance to support your vehicle’s electrical demands. It’s built for strong starts on freezing mornings, dependable performance in extreme temperatures, and the kind of power that keeps up with modern vehicles. 
Unlike traditional lead-acid automotive batteries, advanced LiFePO4 lithium technology offers lighter weight, efficient power delivery, and stable voltage output, helping your vehicle start quickly and run smoothly. A built-in Battery Management System (BMS) continuously monitors the battery to help protect against over-charge, over-discharge, short circuits, and temperature fluctuations. The result is reliable starting power without the maintenance, excess weight, or guesswork. 
Whether you’re replacing a dead battery or upgrading to something that won’t quit, the MM-H5 Li is ready to go to work. No hassles. No maintenance. No interruptions. 
This is power with purpose, and it’s ready when you are. Are you powered to the max? 
Detailed Specifications: 
Voltage: 12.8 Volt 
Amperage: 27 AH 
Chemistry: Lithium 
CCA: 700 
Reserve Capacity (RC): 62 
Battery Size: 9.50 x 7.00 x 7.50 inches 
Weight: 9.20 lbs
Warranty: 5 years
Weight

9.20 Lbs
Volts

12.8
Terminal

Nut and Bolt
Chemistry

LiFePO4
CCA

700
Length

9.50
Width

7.00
Height

7.50
Warranty

5 Year

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Mighty Max Battery
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Emjhaye Juan
ML22-12 Gel type and ML22-12 Non Gel type Batteries came in good condition, purchased from Amazon 6/23/26 and arrived the next day packaged really good.
Hal Model
Very well packaged and.arrived as promised
Ryan Scott
Works great!!
David V Garcia
Love the Boost!!! I got newer batteries for my grandchildren and painted this black for my boys
Dennis Moy
It was delivered fast. Good product.
Frank Scarano
Was an excellent fit for my fios wall box. Inexpensive too! Was dealing with a dead battery for years with beeping every few minutes. This fixed it right up and now will keep internet when the power goes out.
Brenda Killips
Shipped as it should have been. Received in good condition.
Thyckcutie 74
This saved my life... Well not my life but... well the battery on my new predator 3500 generator was dead!! I got it on a super duper sale but I didn't open the box for 6 months, when I did I discovered a bad battery 😟. I called them and they wanted double the price I paid for Amazon to deliver it the SAME DAY!! They didn't even carry the battery in their store 🤬. I put it in and just like that, I can run my mobile Italian ice business again! 😆 Thank you mighty max and Amazon for getting me together!!
Debora Wesley
Great battery at a great price. Work really well.
Louis Wing
This might look like a mess of wires, but it's really the backbone of my home's network and more. Everything important to our home security and connectivity relies on steady power that I have on a battery backup.

I just purchased a replacement battery for my UPS and it's a Mighty Max Battery that is working behind the scenes here. This was almost half of the cost of the OEM battery, and it was a perfect fit for the unit.

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