Yuasa YTX20H-BS Motorcycle Battery YUAM62RBH 12V AGM 310 CCA, 18 Ah (Bottle Supplied)

The Yuasa YUAM62RBH YTX20H-BS is a 12V AGM motorcycle battery delivering 310 cold-cranking amps and 18 amp-hours in a maintenance-free, nonspillable package.

This Yuasa YTX H Series battery combines advanced lead-calcium chemistry with absorbed glass mat (AGM) construction to offer longer-lasting specific gravity, improved starting power, and a valve-regulated, sealed design that eliminates refilling. Shipped in dry form with an activation acid bottle, the YUAM62RBH is sized for many motorcycles and powersports vehicles and is engineered for reliability in cold starts and everyday riding.

How much starting power and capacity does this battery provide?

The YTX20H-BS supplies 310 cold-cranking amps (CCA) at 0 °F (-18 °C) and an 18 Ah capacity rated at 10 hours. That combination supports strong starts and reasonable reserve capacity for lights and accessories between rides.

• 310 C.C.A. for dependable cold starts
• 18 Ah capacity (10HR) to run accessories and provide reserve
• Regular charge current: 1.8 A for safe charging

What makes the AGM and lead-calcium design better for maintenance?

The absorbed glass mat separators lock electrolyte into the plates, making the battery spill-proof and valve-regulated so water loss is eliminated. Lead-calcium alloy helps the battery retain specific gravity far longer than older lead-antimony designs, reducing self-discharge and extending useful life under normal conditions.

• AGM construction: nonspillable and vibration resistant
• Valve-regulated: no watering or topping up required
• Lead-calcium plates: hold specific gravity over three times longer than conventional batteries

How is this battery shipped and how do I activate it?

The YTX20H-BS is supplied in Bottle Supplied (BS) format: the battery is dry and shipped with the electrolyte in a separate container. Activation is completed by the user when ready, allowing longer storage life before first use and safer handling during transport.

• Comes dry with acid bottle for on-demand activation
• Factory-sealed after filling; follow included instructions to fill and rest before initial charge
• Ideal for seasonal storage or delayed installation

Will this fit my motorcycle and how large is it?

The battery is vehicle-specific in fit type; verify compatibility with your motorcycle’s battery box and terminal layout. Its compact footprint balances capacity and fit, and the weight with acid reflects a robust build for durability.

• Dimensions: 6 7/8 in (175 mm) L × 3 7/16 in (87 mm) W × 6 1/8 in (155 mm) H
• Weight with acid: 15.1 lbs — sturdy construction for vibration resistance
• Check polarity and terminal type for correct installation

Who this is for: Riders and powersports owners who need a high-performance, maintenance-free battery with strong cold-start capability and longer shelf life before activation. It’s a good choice for motorcycles, ATVs, or other vehicles requiring the YTX20H-BS form factor where sealed, nonspillable AGM construction and improved lead-calcium performance are priorities.