Yuasa AGM Motorcycle & ATV Battery YTX20L-BS (Bottle Supplied) 12V 18Ah 270 CCA

Built with advanced lead-calcium plates and AGM separators, this Yuasa battery stores electrolyte in a bottle for end-user activation and delivers a nonspillable, valve-regulated design that removes the need to add water. With 18 Ah capacity (10HR), a 270 CCA rating at 0 °F (-18 °C), and compact dimensions (175 × 87 × 155 mm), it’s sized to fit many modern and classic powersports machines while resisting water loss and providing extended standby life versus older antimony designs.

Which vehicles will the YUAM320BS fit?

This battery is specified for a wide range of ATVs, motorcycles, and personal watercraft from major manufacturers. Model fitment includes many Yamaha Kodiak and Grizzly variants, select Arctic Cat and BRP (Can-Am) ATVs, numerous Harley-Davidson and Indian touring and cruiser models, plus Sea-Doo and other PWC models listed by year. Always compare physical dimensions and terminal orientation with your existing battery before ordering.

• Fits Yamaha Kodiak 700 and many Grizzly models (various years)
• Compatible with select Harley-Davidson, Indian, Triumph, and Victory motorcycles
• Used in ATVs like Arctic Cat Alterra and BRP Outlander series
• Meets size and CCA needs for many Sea-Doo and BRP personal watercraft

How does the Bottle Supplied (BS) activation work and why choose it?

BS batteries arrive dry with the electrolyte in a separate plastic bottle so they’re nonactivated for safe shipping and long shelf life. When you’re ready, you pour the supplied acid into the battery, allow it to sit, then install and charge — this ensures a fresh, fully charged battery and reduces storage-related degradation. Follow the included instructions and safety steps carefully when handling the acid pack.

• Dry-shipped for safe transport and longer shelf storage
• End-user activation provides maximum initial charge and longevity
• Includes acid bottle and directions for filling and priming
• Valve-regulated AGM design prevents spills once activated

What are the electrical specs and maintenance needs?

The YUAM320BS delivers 18 Ah at the 10-hour rate with a recommended regular charge current of 1.8 A and a cold cranking amp (CCA) rating of 270 at 0 °F. Being AGM and valve-regulated, it’s maintenance-free after activation — there’s no water topping. However, like all lead-acid batteries, it benefits from occasional charging if the vehicle is stored for extended periods to prevent deep discharge.

• Capacity: 18 Ah (10HR); CCA: 270 at 0 °F (-18 °C)
• Recommended regular charge current: 1.8 A
• Dimensions: 175 × 87 × 155 mm; Weight (with acid): 13.9 lbs
• AGM separators and valve regulation eliminate refilling and reduce electrolyte loss

Is the Yuasa AGM safer and more durable than conventional batteries?

Yes—AGM construction traps electrolyte in glass mats, making the battery nonspillable and more vibration-resistant than many flooded designs. The lead-calcium alloy used in Yuasa batteries helps retain specific gravity significantly longer than older lead-antimony types, which improves shelf life and reduces self-discharge. These properties make the battery a strong choice for demanding powersports and seasonal storage.

• Nonspillable AGM reduces leak risk and allows varied mounting positions
• Lead-calcium formula lowers self-discharge for longer storage life
• Valve regulation prevents water loss and eliminates topping-up
• Well-suited to vibration and thermal stresses from off-road use

Who is this for: The Yuasa YUAM320BS YTX20L-BS is ideal for riders, off-road enthusiasts, and PWC owners who need a compact, maintenance-free 12V battery with reliable cold-cranking performance and the convenience of bottle-supplied activation. Choose it if you want longer shelf life, a nonspillable AGM construction, and broad compatibility with many ATVs, motorcycles, and Sea-Doo/BRP models — just confirm fit and terminal orientation before purchase.

• Yuasa AGM batteries are Maintenance Free, with no need to add water, but periodic charging required when not in use
• Advanced lead-calcium technology – holds its specific gravity more than 3 times longer than conventional lead antimony batteries
• Absorbed Glass Mat (AGM) separators absorb electrolyte making the battery nonspillable, the valve regulated design eliminates water loss and the need for refilling
• Bottle Supplied (BS) – dry AGM batteries are shipped with the electrolyte stored in a plastic container and the battery is filled with electrolyte from the container by the end user when it’s ready to be activated
• Size/Weight - Length: 6 7/8 in (175 mm), Width: 3 7/16 in (87 mm), Height: 6 1/8 in (155 mm), Weight with Acid (lbs.): 13.9; Specs - Capacity Ah: 18 @ 10HR, Regular Charge Current (Amp): 1.8, C.C.A. @ 0 °F (-18 °C): 270