Mighty Max Battery 12V 14Ah AGM Auxiliary Battery MM-AUX14 — Compact Sealed, 200 CCA & 22RC

The Mighty Max MM-AUX14 is a sealed 12V 14Ah AGM auxiliary battery that provides dependable backup and starting support for vehicles and accessories.

Compact and maintenance-free, this rechargeable AGM pack is built to supply steady power to electronics, accessories, and emergency systems when your engine is off. Engineered for vibration resistance and sealed safety, the MM-AUX14 slips into tight spaces and supports multiple mounting orientations (not upside down) to fit diverse vehicle layouts.

How much runtime and starting power does this battery deliver?

The MM-AUX14 balances reserve capacity and cold-cranking ability for everyday auxiliary needs. Its 22-minute reserve capacity keeps small loads running, while 200 CCA offers reliable cranking assistance in a range of temperatures.

• 12V nominal voltage suitable for standard automotive systems
• 14Ah capacity for accessory power and short runtime tasks
• 22-minute reserve capacity for continued operation after the engine stops
• 200 cold-cranking amps to help start many gasoline engines in cooler conditions

What makes the AGM construction practical for vehicles?

Absorbent Glass Mat (AGM) design combines high discharge capability with a sealed, spill-proof housing so you can install the battery securely without maintenance. The sealed construction also improves tolerance to shocks and vibration common in automotive use.

• Sealed, maintenance-free — no watering required
• Spill-proof design for safer mounting and transport
• High discharge and deep-discharge recovery for accessories and repeated use
• Robust casing resists vibration and temperature swings

How easy is installation and what comes in the box?

Installation is straightforward: the compact footprint and labeled polarity make placement simple, and the battery ships with mounting screws for quick attachment. Note that wire harnesses and additional mounting brackets are not provided, so plan to reuse existing hardware or purchase anchors separately.

• Dimensions: 5.93 × 3.50 × 5.68 inches — fits tight compartments
• Positive terminal on the left, negative on the right for clear polarity
• Includes mounting screws; excludes wire harness and extra brackets
• Can be mounted in multiple positions except upside down

Is this battery reliable and safe for extended use?

Mighty Max produces the MM-AUX14 in an ISO-certified facility to meet recognized quality and safety standards. With rugged construction and a three-year warranty, it’s intended to give consistent service for auxiliary tasks and emergency backup.

• Manufactured in an ISO-certified plant for quality control
• CE-standard compliance underscores safety testing
• Built to handle shock, vibration, and demanding conditions
• 3-year warranty for added consumer confidence

Who this is for: The MM-AUX14 suits drivers and DIY installers who need a compact, no-fuss auxiliary battery for cars, trucks, ATVs, and similar vehicles. It’s a good match for powering alarm systems, audio accessories, lighting, and emergency devices where a sealed, durable, and rechargeable power source is required. If you need longer runtimes, heavy duty cranking for large diesel engines, or specialized harnesses, consider higher-capacity or dedicated starting batteries and appropriate installation accessories.