The letters “BS” on a Yuasa battery are part of the product code rather than a universal performance specification. In practice, it designates a specific variant within Yuasa’s battery line, often seen on motorcycle and powersport batteries such as YTX9-BS or YTX12-BS. To know the exact meaning for your unit, check the full part number and consult Yuasa’s official catalogs or support.
What the letters might signify
Several interpretations are commonly associated with the -BS suffix on Yuasa batteries. The exact meaning can vary by product line and market, so it’s best treated as a model-variant indicator rather than a battery-spec parameter like voltage or capacity.
- Market or region variant: The -BS suffix can indicate a version intended for specific markets (for example, the UK/European market) where certain standards or packaging are required.
Because the exact definition of -BS is not published in a universal, public specification and can vary by product line, the safest approach is to verify against official documentation for your exact part number.
How to confirm the meaning for your battery
To ensure you understand what -BS means for your specific Yuasa battery, follow these steps:
- Note the full part number on the label, including the -BS suffix (for example, YTX9-BS).
- Look up the exact part number in Yuasa’s official product catalog, datasheet, or service bulletin for your region.
- Compare the label information (voltage, capacity, terminals, mounting, and intended vehicle type) with the catalog’s specifications.
- If the meaning remains unclear, contact Yuasa customer support and provide photos of the label and packaging, along with your vehicle type and model year.
Clear confirmation helps ensure compatibility, proper warranty coverage, and correct maintenance expectations.
Additional context and best practices
Understanding model suffixes like -BS can prevent mismatches when buying replacements or compatibility parts. Always cross-check the exact part number rather than inferring from the general series. If you’re shopping online, read the product description carefully and review any regional notes that accompany the listing.
Summary
On Yuasa batteries, -BS is a suffix used in the model code to identify a specific variant within a line (such as YTX9-BS or YTX12-BS). It is not a universal performance metric and can reflect regional packaging, internal series, or construction differences. To determine the precise meaning for your battery, consult Yuasa’s official datasheets/catalogs for the exact part number or contact their support with the label details.
How do you tell if a battery is STD or AGM?
Most AGM batteries use flat lead plates surrounded by absorbent glass mats, although Optima batteries have their plates formed into a spiral for even more benefits. Unlike standard batteries that require liquid to flow freely around the plates, AGM batteries keep the electrolyte trapped within the mats.
How to read Yuasa battery date?
The 8-digit code located on top of the battery, not the label, indicates the year, month, and day of manufacture using the first 6 digits. The last 2 digits specify the plant and shift. A white sticker is also placed on the battery during biannual boosting at Yuasa with the boost date.
What is the difference between ytx16 BS and ytx20 BS?
The ytx16-bs measures 6" x 3 7/16" x 6 3/8" high and is rated at 230 CCA. The ytx20-bs measures 6 7/8" x 3 7/16" x 6 1/8" high and is rated at 270 CCA. Both are maintenance free. Both have the positive and negative terminals in the same location, as shown in the picture.
What does BS mean for battery?
Battery Sealed
BS: Often signifies that the battery is a sealed, maintenance-free type (BS stands for “Battery Sealed”).