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

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

Designed as a compact, maintenance-free replacement, this Mighty Max Battery model combines a 10 amp-hour capacity with a 125 CCA rating to handle typical motorcycle electrical loads, cold starts and accessory use. Its sealed absorbed glass mat (AGM) construction resists spills and vibration, and the unit can be mounted in multiple orientations. The listing includes the battery and screws only; no wiring harness or additional mounting hardware is provided.

Will this battery fit my Yamaha V‑Star 650 and how do I confirm compatibility?

This YT12B-4 is sized and specified to replace the stock battery in many Yamaha XVS650 V‑Star models produced between 1998 and 2011. To confirm fit, compare the battery dimensions and terminal layout with your current unit before ordering.

• Dimensions: 6.00 in (length) x 2.75 in (width) x 5.25 in (height).
• Polarity: positive terminal located on the left, negative on the right when terminals face you.
• Check CCA and AH ratings against manufacturer recommendations.
• Not shipped with harnesses or mounting brackets; screws included.

How does the YT12B-4 handle cold starts and daily riding?

The battery’s 125 Cold Cranking Amps (CCA) rating provides the burst of power needed for reliable engine starts at lower temperatures, while the 10AH capacity supports accessories and short rides. AGM construction improves discharge performance and reduces maintenance compared with flooded batteries.

• 125 CCA for dependable starting in cool weather.
• 10AH capacity for typical motorcycle electrical loads and brief accessory use.
• AGM/SLA design offers stable voltage under load and low self-discharge.

Can I mount this battery in any position and how durable is it on the road?

Yes — the sealed SLA/AGM design lets you install the YT12B-4 in various orientations without worrying about leaks. The unit is engineered to resist shocks and vibration commonly encountered on motorcycles, helping maintain long-lasting performance across a wide temperature range.

• Sealed AGM construction prevents spills and allows flexible mounting positions.
• Shock- and vibration-resistant casing suited for motorcycle use.
• Wide operating temperature tolerance for summer and winter riding.

What is included and what warranty support does Mighty Max provide?

The product listing contains the battery and mounting screws only; additional harnesses, straps, or brackets are not included. Mighty Max Battery backs this YT12B-4 with a one-year warranty to protect against manufacturing defects under normal use.

• Included: YT12B-4 battery and mounting screws.
• Not included: wire harnesses, straps, or additional mounting hardware.
• Warranty: full one-year coverage from Mighty Max Battery.

Who is this battery for? The Mighty Max YT12B-4 suits motorcycle owners and mechanics searching for a compact, maintenance-free replacement battery for Yamaha XVS650 V‑Star models (1998–2011). It’s a practical choice for riders who want a sealed, vibration-resistant battery with enough cold-cranking power for reliable starts and adequate capacity for common accessories. If you need a complete installation kit, plan to source the harness or mounting parts separately, and verify terminal placement and dimensions before purchasing.