Yuasa YUAM6212B YT12B-BS Motorcycle AGM Battery — 10Ah, 210 CCA, Bottle‑Supplied Maintenance‑Free

This bottle-supplied Absorbed Glass Mat (AGM) battery combines lead-calcium alloy construction and valve-regulated design to provide a nonspillable, low-maintenance power source for many sport and standard motorcycles and select scooters. Shipped dry with an acid pack, the battery is filled just before first use, which simplifies shipping and extends shelf life. Compact dimensions and a 10 Ah capacity make it a common replacement for middleweight and high-performance models.

How does this battery differ from a conventional flooded motorcycle battery?

The YUAM6212B uses AGM separators that immobilize electrolyte so the battery is nonspillable and sealed after activation, while lead-calcium grids reduce water loss and self-discharge compared with older lead-antimony types. You get longer stable specific gravity and less frequent top-ups.

• AGM construction absorbs electrolyte for spill resistance.
• Valve-regulated design prevents water loss and eliminates refill needs.
• Lead-calcium alloy holds charge and specific gravity longer.
• Shipped dry in a bottle for safer transport and longer shelf life prior to activation.

What are the key specifications and physical dimensions?

This model is sized to fit many sportbikes and cruisers while offering reliable cold-start amps and routine charging characteristics suitable for motorcycle charging systems. Keep the battery charged during storage to preserve life.

• Capacity: 10 Ah (10-hour rate).
• Cold Cranking Amps (CCA): 210 at 0 °F (-18 °C).
• Regular charge current: 1 A recommended.
• Dimensions: 6.0 in (L) × 2.75 in (W) × 5.125 in (H); weight with acid ~9 lbs.

How do you install and activate the bottle-supplied (BS) battery?

Activation is done once you’re ready to put the battery into service: pour the supplied electrolyte from the bottle into the battery, let it absorb for the recommended time, and then charge per Yuasa guidelines before installation. Follow safety steps and wear protective gear when handling acid.

• Fill battery with supplied acid bottle until fully absorbed into AGM mats.
• Allow chemical absorption time indicated in Yuasa instructions.
• Charge with a compatible motorcycle battery charger before first use.
• Observe protective measures: gloves, eye protection, and a well-ventilated area.

Which motorcycles and scooters is this battery compatible with?

The YUAM6212B fits a wide range of European and Japanese bikes that require a compact 10 Ah class battery with roughly 210 CCA. It is commonly used as a replacement in many Ducati, Kawasaki, Triumph and Yamaha models, and select Vespa scooters.

• Ducati: 1098, 1198, Diavel, Monster, Multistrada, Scrambler and other models.
• Kawasaki ZX-10R; Triumph Bonneville, America, Tiger, Speedmaster models.
• Yamaha FZ6, YZF-R1, YZF-R6 and XVS650 V-Star models.
• Piaggio/Vespa 946 scooter compatibility.

Who is this for? If you own a mid-displacement sportbike, standard, cruiser or a compatible scooter and want a compact, stable battery with the convenience of dry shipping and maintenance-free operation after activation, the Yuasa YUAM6212B offers a durable OEM-quality option. It’s aimed at riders who prefer reliable cold-start performance, lower self-discharge for seasonal storage, and a sealed AGM design that eliminates routine water maintenance.