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

When you need dependable, portable power for your vehicle, the Mighty Max Battery MM-AUX12 auxiliary battery offers a compact 12V, 12Ah AGM solution designed for reliability in real-world conditions. This sealed, rechargeable cell is built to perform whether you €™re commuting, camping, or maintaining essential systems while the engine is off.

What makes MM-AUX12 a flexible backup option

The MM-AUX12 is designed to provide consistent power without creating a mess. Its 20-minute Reserve Capacity helps extend run times when you rely on accessories or need a jump-start buffer, so you have options in moments of need. The sealed AGM design is spill-proof and crafted to handle high discharge and deep discharge recovery, keeping voltage steady when it counts.

• Reliable Backup Power: 12V 12Ah AGM battery supports essential systems even with the engine off.
• 20-Minute Reserve Capacity: Supports longer run times and a smoother power profile.

Rugged, weather-ready construction

Under tougher conditions, the MM-AUX12 shows its strength. The rugged internal build resists shock and vibration, and it performs reliably across a wide temperature range. Manufactured in an ISO-certified facility and CE-certified for safety and quality, these batteries are designed to meet demanding expectations.

• Strength that Starts on the Inside: Rugged construction withstands shocks, vibrations, and harsh environments.
• Certified Safe and Tested: ISO-certified facility production with CE safety standards.

Versatility and installation

With multi-position mounting (excluding upside down) and compact dimensions, it is easy to place the MM-AUX12 in many vehicles or setups. The unit measures 5.93 x 3.50 x 5.75 inches, and the polarity is clearly marked for quick identification.

What’s included and care notes

Each MM-AUX12 ships with mounting screws for quick, tool-friendly installation. Wire harnesses and mounting accessories are not included, so please verify your installation kit fits your setup. A 3-year warranty provides long-haul protection and confidence that you re powered to the max.

Whether you re outfitting a backup system for a daily driver or adding reliability to a weekend rig, the MM-AUX12 offers a compact, rechargeable option that can adapt to many scenarios without taking up too much space.