Mighty Max Battery YT4B-BS 12V 2.3Ah AGM Motorcycle Battery — Sealed, Maintenance-Free Starting Power

The Mighty Max Battery YT4B-BS is a sealed 12V 2.3Ah AGM motorcycle battery that arrives charged, maintenance-free, and ready to install.

This compact absorbed-glass-mat (AGM) battery packs spill-proof lead-acid chemistry into a small form factor for motorcycles, scooters, ATVs, and other powersports applications. Built to resist vibration and operate across a wide temperature range, the YT4B-BS provides reliable starting power and standby performance without the need for topping off electrolyte. It ships sealed and carries a one-year warranty for peace of mind.

How much power and starting ability does the YT4B-BS deliver?

The battery is rated 12 volts with a capacity of 2.3 ampere-hours (Ah) and 25 cold cranking amps (CCA). That combination makes it suitable for smaller engines and electronics-dependent bikes where compact size and dependable cold starts matter.

• 12 V nominal voltage for most small motorcycle electrical systems
• 2.3 Ah capacity for short-term accessory loads and starting cycles
• 25 CCA rating to assist with cold-weather starts on small-displacement engines
• Sealed AGM design maintains performance without fluid maintenance

Will the battery fit my vehicle and how is it mounted?

Physical dimensions are compact at 4.44" x 1.50" x 3.44", allowing installation in tight battery bays and under seats. As a sealed unit, it can be positioned in any orientation and does not require additional mounting hardware or a harness, though you should confirm terminal orientation and cable reach for your specific model.

• Dimensions: 4.44 in long × 1.50 in wide × 3.44 in high
• Mountable in any position—upright or on its side—thanks to AGM construction
• No acid spills or ventilation required, simplifying installation under seats or in enclosed compartments
• Verify terminal access and polarity match your bike before final installation

How durable is the YT4B-BS for powersports use?

The YT4B-BS AGM construction is designed to withstand shock and vibration common to motorcycles and off-road machines. It tolerates wide operating temperatures and supports repeated discharge and recharge cycles for seasonal use, storage, or frequent riding schedules.

• AGM/Sealed lead-acid chemistry resists vibration and impact
• Wide temperature performance for summer rides and cooler starts
• Good deep-discharge recovery compared with standard flooded cells
• Rechargeable and suitable for long-term storage with a proper charger

What should I know about maintenance and warranty?

This battery is sold sealed and maintenance-free—no watering or acid handling required. It ships charged and ready to install; for storage or long layups, use a compatible charger or maintainer. The product includes a full one-year warranty from the manufacturer.

• Comes charged and sealed, ready for immediate use
• No periodic electrolyte checks or refilling needed
• Recommend a smart charger/maintainer for long-term storage
• Includes a one-year manufacturer warranty

Who is this for? The Mighty Max YT4B-BS is targeted at riders and owners of small motorcycles, scooters, mopeds, ATVs, and personal transporters who need a compact, maintenance-free battery with decent starting power. It’s also a good choice for DIY mechanics and fleet operators seeking a sealed AGM option that’s easy to install and less sensitive to mounting orientation. If you need higher cranking amps or greater reserve capacity, consider a larger group battery; if you prioritize minimal upkeep and spill-proof design in a small package, this YT4B-BS is a practical fit.