Mighty Max Battery YTX4L-BS 12V 3Ah AGM Motorcycle Battery - 50 CCA, Maintenance-Free Sealed Design

The Mighty Max Battery YTX4L-BS is a sealed 12‑volt, 3Ah AGM battery engineered for motorcycles, ATVs, PWC and other small powersports machines that need a compact, maintenance‑free power source.

This sealed lead‑acid (SLA) battery uses absorbed glass mat (AGM) construction to deliver reliable starting power and long service life in a small package. It ships fully charged, spill‑proof, and ready to install, offering vibration resistance and the ability to be mounted in virtually any orientation. Designed as a direct replacement for vehicles requiring the YTX4L‑BS form factor, it combines convenience with performance for seasonal and everyday riders.

How much power does the YTX4L-BS provide for starting and accessories?

The YTX4L‑BS supplies 12 volts and a 3 ampere‑hour capacity with 50 cold‑cranking amps (CCA), enough to start small-displacement engines and support low‑draw accessories. AGM chemistry provides strong discharge capability for brief high‑current demands while protecting against deep discharge damage when properly charged.

• Nominal voltage: 12V
• Capacity: 3 Ah
• Cold Cranking Amps: 50 CCA for reliable starts
• Sealed AGM design resists spills and vibration

Will this battery fit my bike and how big is it?

The compact dimensions make the YTX4L‑BS a common replacement for many motorcycles, scooters, ATVs, and personal watercraft that specify the YTX4L‑BS size. Polarity is negative terminal on the left and positive on the right when the battery is oriented as installed; check your vehicle’s manual for terminal placement and clearance.

• Dimensions: 4.40" × 2.90" × 3.42" (L × W × H)
• Polarity: Negative on left, positive on right
• Mounting: can be installed in any position
• Included: battery and mounting screws only (no harness)

How durable and low‑maintenance is this battery for seasonal storage?

AGM construction makes the battery spill‑proof and tolerant of vibration, which helps in tough riding conditions and during storage. It arrives sealed and ready to use, and requires no routine water topping; periodic charging with a compatible charger during long storage extends life and helps prevent discharge.

• Maintenance: sealed, no water addition needed
• Storage: recommended float or trickle charging when stored long term
• Durability: resists shocks and wide temperature swings
• Warranty: full one‑year manufacturer’s warranty

What accessories or installation hardware are included?

The package contains the battery and screws needed for basic mounting; it does not include wiring harnesses, connectors, or additional mounting brackets. For a smooth swap, keep your vehicle’s original hardware or obtain the proper terminal connectors and a compatible charger if you plan to maintain it off the vehicle.

• Included: battery + screws
• Not included: wire harness, connectors, straps, chargers
• Tip: verify terminal type and polarity before installation

Who this battery is for: Riders and powersports owners who need a compact, maintenance‑free replacement battery for small engines — including motorcycles, scooters, ATVs, snowmobiles, and jet skis — will benefit from the Mighty Max YTX4L‑BS. It’s especially useful for people who prefer a ready‑to‑install, spill‑proof battery with good vibration resistance and a manufacturer’s one‑year warranty. If your vehicle requires the YTX4L‑BS specification and you want AGM reliability in a tight package, this model is a practical choice.