Mighty Max Battery YT12B-4 12V 10Ah Motorcycle Battery for Yamaha V‑Star 650 — 125 CCA, AGM SLA Sealed

The Mighty Max Battery YT12B-4 is a sealed 12V 10Ah SLA/AGM replacement battery engineered to deliver reliable starting power and vibration resistance for Yamaha XVS650 V-Star motorcycles (1998–2011).

If you need a compact, maintenance-free battery that fits the Yamaha 650cc V‑Star family and tolerates a range of temperatures and riding conditions, this YT12B-4 offers a balance of cold-start performance and cycle durability. It’s a sealed lead-acid (SLA) design with AGM technology, meaning it’s spill-proof and rechargeable, so it can be mounted in various positions and withstand typical motorcycle vibration.

Will this battery fit my Yamaha V‑Star 650 and install easily?

Yes — the YT12B-4 is sized and polarized to match many Yamaha XVS650 models from 1998 through 2011. Confirm tray dimensions and terminal orientation before purchase.

• Dimensions: 6.00" x 2.75" x 5.25" — compare to your battery tray.
• Polarity: positive terminal on left, negative on right when facing terminals.
• Listing includes battery and screws only; harness or mounting brackets not included.

How does the YT12B-4 perform in cold starts and daily use?

This model is rated at 125 Cold Cranking Amps (CCA), providing the burst of current needed for starting the 650cc V‑Star under many conditions. Its AGM construction supports high discharge rates and a reliable recharge cycle after rides.

• 125 CCA gives dependable starting power for typical motorcycle engines.
• AGM/SLA design supports repeated discharge and recovery cycles.
• Sealed and spill-proof for low maintenance and safe mounting.

Can the battery withstand vibration, shocks, and temperature changes?

The YT12B-4 is built to resist shocks and vibration common to motorcycles and to maintain performance across a wide temperature range. That makes it suitable for daily commuting, touring, and seasonal storage when paired with a compatible charger.

• Shock- and vibration-resistant construction for on‑road durability.
• Wide operating temperature tolerance for varied climates.
• Rechargeable and recoverable after deep discharge when properly charged.

What’s included and what warranty covers this battery?

The purchase includes the Mighty Max YT12B-4 battery plus mounting screws only; no wiring harness or additional mounting accessories are provided. Mighty Max backs the battery with a full one-year warranty against manufacturing defects.

• Included: battery and mounting screws.
• Not included: wire harness, brackets, or charger.
• Warranty: full one-year manufacturer coverage.

Who this is for: Riders and DIY motorcycle owners who want a direct-replacement, maintenance-free battery for Yamaha XVS650 V‑Star models (1998–2011). It suits motorcyclists who value a sealed AGM battery that resists vibration, can be mounted in different positions, and delivers dependable cold-cranking performance without routine water checks. Make sure to verify physical dimensions and terminal orientation for a proper fit and use a compatible charger for storage or long-term care.