Yuasa YT14B-BS Maintenance Free 12 Volt AGM Battery (Bottle Supplied) - YUAM624B4

The Yuasa YT14B-BS Maintenance Free 12 Volt AGM Battery (YUAM624B4) is a premium absorbed glass mat motorcycle battery designed for riders who demand reliable, no-fuss starting power. Sold as a Bottle Supplied (BS) unit — meaning it ships dry and includes the electrolyte bottle for activation — this battery is a direct-fit replacement that covers a wide range of street motorcycles and powersports applications. Backed by Yuasa's long-standing reputation for motorcycle battery quality, the YT14B-BS is a smart choice for anyone restoring, upgrading, or replacing a dead battery on a compatible bike.

Key Features & Benefits

• Maintenance Free AGM Technology: The YT14B-BS uses absorbed glass mat construction, which means no need to top off water levels between charges. You get reliable performance without the upkeep hassles of conventional flooded batteries.
• Bottle Supplied (BS) — Fresh Pack: Ships dry with the electrolyte bottle included. Activating the battery yourself means you're working with a fresh, fully charged cell rather than one that may have sat activated on a shelf for months — a key advantage for long-term battery health and longevity.
• 12 Volt / 12 Amp-Hour Capacity: With a 12V, 12 Ah (10-hour rate) specification, this battery delivers the cold cranking and reserve capacity needed for typical street motorcycle applications.
• Made in Japan: Yuasa manufactures this battery in Japan to strict quality standards, which is reflected in its consistent performance and reputation among powersports enthusiasts.
• Spill-Proof AGM Design: AGM batteries are sealed and spill-resistant, making them suitable for installations where the battery may be mounted at an angle — a common requirement in modern motorcycle chassis design.
• Periodic Charging Recommended: While maintenance free from a water-addition standpoint, Yuasa recommends periodic charging to keep the battery at peak performance, especially during storage or off-season periods.

Specifications

• Part Number: YUAM624B4
• Battery Model: YT14B-BS
• Battery Family: Fresh Pack, Maintenance Free
• Voltage: 12V
• Capacity (10-HR): 12 Ah
• Dimensions: 6 in. x 2¾ in. x 5¾ in. (per Yuasa manufacturer data)
• Weight: 10.1 lb
• Color/Finish: Black
• Riding Style: Street
• Origin: Made in Japan
• UPC: 048493624488

Fitment

The Yuasa YT14B-BS is a standard battery size used across a broad range of street motorcycles that call for a YT14B-BS or equivalent replacement. Because powersports battery fitment is highly model-specific — depending on battery box dimensions, terminal orientation, and CCA requirements — it is strongly recommended that you confirm compatibility against your owner's manual or the battery currently installed in your motorcycle before ordering. If you need help verifying fitment for your specific make, model, and year, ThreePiece.us's fitment team is available to assist.

Common applications include various Yamaha, Ducati, and other sport/street motorcycle platforms that specify the YT14B-BS form factor, though you should always cross-reference your OEM battery specification to confirm.

What's in the Box

• 1x Yuasa YT14B-BS AGM battery (shipped dry)
• 1x Electrolyte bottle (for activation)

Why Buy from ThreePiece.us

• Free Shipping: Every order ships free — no minimum required.
• Affirm Financing: Split your purchase into manageable payments with Affirm financing, including 0% APR options where available.
• Expert Fitment Support: Our team has served 10,000+ customers. Not sure if this battery fits your bike? Contact us directly at 813-535-5801 or via email and we'll help you confirm before you buy.
• Genuine Products: ThreePiece.us carries 100% genuine parts — never replicas or counterfeits.
• In Stock & Ready: This product is regularly stocked, so you won't be waiting months for a special order.

Frequently Asked Questions

Is this battery maintenance free?

Yes — the Yuasa YT14B-BS is a maintenance free AGM battery, meaning you never need to add water. However, Yuasa recommends periodic charging to maintain peak battery health, especially during storage seasons.

What does "Bottle Supplied (BS)" mean?

"Bottle Supplied" means the battery ships in a dry, uncharged state with the electrolyte bottle included in the box. You activate it yourself before installation by filling it with the provided electrolyte. This Fresh Pack approach helps ensure you're working with the freshest possible battery at the time of activation.

How do I activate a Yuasa AGM battery?

Yuasa provides a detailed 7-step activation guide for their AGM batteries on their official website. The process is straightforward and can be completed by most riders or mechanics. It's important to follow the instructions carefully to ensure full capacity and long battery life.

How do I confirm this battery fits my motorcycle?

Check your motorcycle's owner's manual for the OEM battery specification — if it calls for a YT14B-BS, this is your battery. You can also contact the ThreePiece.us fitment team at 813-535-5801 and we'll help you verify compatibility for your specific make, model, and year before you order.