Yuasa YTX12-BS Motorcycle Battery YUAM3RH2S – 12V AGM, 180 CCA, 10 Ah, Bottle-Supplied

The Yuasa YUAM3RH2S YTX12-BS is a compact 12-volt AGM motorcycle battery delivered dry that provides 10 amp-hours and 180 cold-cranking amps in a sealed, maintenance-free design.

This Yuasa unit uses absorbed glass mat (AGM) construction and advanced lead‑calcium technology to keep electrolyte immobilized, reduce self-discharge, and avoid water top-ups. It ships as a bottle-supplied (BS) dry battery so you activate it with the included acid when you’re ready. The small footprint and 9.2 lb filled weight make it suitable for many motorcycles, ATVs, and powersport vehicles that require a vehicle-specific fit type and dependable starting power.

How does this battery deliver reliable starts in cold conditions?

The YTX12-BS produces 180 cold cranking amps (CCA) measured at 0 °F (-18 °C), which means it can deliver the quick bursts of current needed to crank small engines reliably in lower temperatures. AGM construction also minimizes internal resistance, improving momentary current delivery.

• 180 CCA rating for strong cold starts
• AGM separator reduces internal resistance
• Lead‑calcium plates hold specific gravity longer for consistent performance

What maintenance does the Yuasa YUAM3RH2S require?

Once activated and filled with the supplied electrolyte, the battery is maintenance-free: the valve-regulated design and sealed AGM plates prevent water loss so you won’t need to add water. Periodic charging is recommended when the vehicle is stored to preserve capacity and lengthen service life.

• No water top-ups ever after activation
• Store with a charger or maintainer during long idle periods
• Valve-regulated design prevents spills and reduces upkeep

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

The battery arrives dry with the electrolyte in a separate bottle to comply with shipping regulations; follow the manufacturer instructions to pour the acid into the battery and allow it to settle and charge before use. Basic mechanical skills and standard protective gear are sufficient for activation and installation.

• Unpack battery and acid bottle carefully per instructions
• Fill the battery, let the electrolyte absorb into the AGM, then charge before first use
• Connect vehicle terminals with correct polarity and secure mounting

What are the physical dimensions and electrical specs I should check for fit?

The compact YTX12-BS is designed to fit vehicle-specific battery trays; verify your model’s size and terminal orientation before purchase. Its 10 Ah capacity and 1.2 A recommended regular charge current give a clear idea of charge time and compatibility with common motorcycle charging systems.

• Length: 6 in (150 mm), Width: 3 7/16 in (87 mm)
• Height: 5 1/8 in (130 mm); Weight with acid: 9.2 lbs
• Electrical: 12 V, 10 Ah (10HR), 180 CCA, regular charge ~1.2 A

Who is this for? The Yuasa YUAM3RH2S YTX12-BS suits riders and powersport owners who need a compact, sealed battery with strong starting performance and minimal upkeep. It’s ideal for motorcycles, scooters, ATVs, and other small vehicles that require a vehicle-specific 12 V battery, especially where spill-proof, vibration-resistant AGM construction and reliable cold-weather starts are priorities. Choose this model if you want a manufacturer-backed AGM battery that ships dry for safe transport and is activated on your schedule.