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YT12B-BS

YT12B-BS Battery: Dimensions, Polarity & Equivalents

Dimensions, polarity, what the name means, similar battery codes and the battery that replaces it.

By Redacción de Satkit Updated Published on 3 min read 1 sources cited

In short

  • 12 V · 10 Ah · 210 A EN
  • 150 × 69 × 130 mm · positive terminal on the left
  • Satkit replacement: YT12B-BS gel motorcycle battery

The YT12B-BS is a 12 V maintenance-free AGM motorcycle battery: 10 Ah, 210 A cold cranking amps (EN) and a case measuring 150 × 69 × 130 mm. The positive terminal is on the left when you face the label.

YT12B-BS diagram: 150 × 69 × 130 mm, positive terminal on the leftLABEL+−150 mmLength130 mmHeight69 mmWidth
Fig. 01 YT12B-BS diagram: 150 × 69 × 130 mm, positive terminal on the left Diagram: Satkit, drawn to scale using the dimensions in the specifications

Dimensions and specifications

YT12B-BS YT12B-BS gel motorcycle battery
Voltage 12 V 12 V
Capacity 10 Ah (10 h) · 10.5 Ah (20 h) 10 Ah
Cold cranking amps 210 A (EN) —
Length × width × height 150 × 69 × 130 mm 150 × 70 × 130 mm
Polarity Positive terminal on the left Positive terminal on the left
Technology AGM Gel
Supplied with Acid bottle —
Weight — 3.6 kg

The battery code column gives the specifications from Yuasa's product page, as Yuasa is the brand behind the code. The other column gives the specifications for the battery sold by Satkit. Capacity is always compared at the same hourly rate, and starting current using the same standard.

What does YT12B-BS mean?

  • Y: Yuasa, the brand that created this naming system.
  • YT (without X or Z): maintenance-free AGM in a different battery case family, narrower than the YTX cases.
  • 12: a size and power index, not the amp-hour rating: the YT12B-BS has a capacity of 10 Ah at the 10-hour rate.
  • B after the number: a case variant, different from the version without a letter.
  • -BS: the original battery is supplied dry with an acid bottle (bottle supplied), ready to be filled before fitting.

Battery codes that are easy to mix up with YT12B-BS

Battery code Dimensions Polarity Difference
YT14B-BS 150 × 70 × 145 mm Positive terminal on the left Different case: 15 mm taller.
YTX12-BS 150 × 87 × 130 mm Positive terminal on the left Different case: 18 mm wider.

Satkit battery for YT12B-BS

YT12B-BS gel motorcycle battery: sealed gel battery, 12 V and 10 Ah.

Motorcycles that use YT12B-BS

23 versions by make and model

Ducati

Yamaha

See 1 more

Piaggio

Find my motorcycle battery →

Charging and fitting

For the full process, see our guide to choosing a motorcycle battery.

Satkit battery

YT12B-BS gel motorcycle battery shown from the front with both terminals

YT12B-BS gel motorcycle battery

12 V, 10 Ah battery to replace the YT12B-BS. Sealed gel technology, maintenance-free. Positive terminal on the left.

Where to buyfrom €29.52

Prices incl. VAT checked on 7 October 2026; they may change.

Sources

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