Mighty Max Battery 12V 9Ah Motorcycle AGM Battery YB9A-A — 130 CCA, Maintenance-Free, Sealed

The Mighty Max Battery YB9A-A is a sealed 12-volt, 9 amp-hour AGM rechargeable battery delivering 130 CCA in a compact, maintenance-free package for motorcycles and powersports.

This battery uses absorbed glass mat (AGM) lead-acid technology to provide a sealed, spill-proof power source that arrives charged and ready to install. Its small footprint fits many two- and three-wheeled vehicles and personal watercraft, and the construction resists vibration and orientation limits so you can mount it in different positions. A one-year warranty backs the unit for consumer confidence.

How will this battery perform on cold starts or short rides?

The YB9A-A offers 130 cold cranking amps (CCA), which helps deliver the burst of current needed for engine starts in cooler conditions and brief-use scenarios. Because it’s an AGM SLA, it tolerates repeated short discharges better than standard flooded lead-acid cells.

• 130 CCA for reliable starting power
• 9 Ah capacity supports accessories and electronics on short runs
• High discharge rate suitable for frequent start-stop use

What are the physical dimensions and installation details I should know?

The battery is compact and designed to fit common powersports battery bays. Terminals are configured with the positive terminal on the left and negative on the right when facing the battery, and the package includes the battery and mounting screws only.

• Dimensions: 5.30" (length) x 3.00" (width) x 5.25" (height)
• Polarity: positive on left, negative on right (facing battery)
• No harness or brackets included—check fit and accessories before installation

How durable is this battery for powersports like ATVs, jet skis, and snowmobiles?

AGM construction offers improved resistance to shocks, vibration, and orientation, making it a good match for off-road and marine environments. The sealed design prevents spills and reduces maintenance needs compared with conventional flooded batteries.

• Sealed, spill-proof AGM construction for rugged use
• Mountable in multiple positions without leaking
• Resistant to vibration for longer service life in active vehicles

What charging and maintenance practices should I follow?

The YB9A-A ships charged and is maintenance-free, but following proper charging routines will extend useful life. Use an AGM-compatible charger when topping off or storing the battery, and avoid prolonged deep discharges.

• Use an AGM or SLA-compatible charger for best results
• Store charged and periodically recharge if not used for long periods
• Avoid sustained deep discharge to preserve cycle life

Who is this for? Riders and owners of small-displacement motorcycles, scooters, ATVs, personal watercraft, jet skis, and snowmobiles who need a compact, maintenance-free battery with dependable starting power will find the Mighty Max YB9A-A a practical choice. It’s especially suited to users who want a sealed, vibration-resistant battery ready to install with no topping up, and who value compact dimensions for tight battery compartments. Confirm terminal layout and case size against your vehicle’s specifications before purchasing to ensure a correct fit.