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YB3L-B

YB3L-B Motorcycle Battery: Dimensions, Polarity & Fit

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

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

In short

  • 12 V · 3 Ah · 30 A EN
  • 99 × 57 × 111 mm · positive terminal on the right
  • Satkit replacement: YB3L-B gel motorcycle battery

The YB3L-B is a 12 V conventional flooded motorcycle battery from the YuMicron series: 3 Ah, 30 A cold cranking amps (EN) and a case measuring 99 × 57 × 111 mm. With the label facing you, the positive terminal is on the right.

YB3L-B diagram: 99 × 57 × 111 mm, positive terminal on the rightLABEL−+99 mmLength111 mmHeight57 mmWidth
Fig. 01 YB3L-B diagram: 99 × 57 × 111 mm, positive terminal on the right Diagram: Satkit, drawn to scale using the dimensions in the product specifications

Dimensions and specifications

YB3L-B YB3L-B gel motorcycle battery
Voltage 12 V 12 V
Capacity 3 Ah (10 h) · 3.2 Ah (20 h) 3 Ah
Cold cranking amps 30 A (EN) 35 A at −18 °C
Length × width × height 99 × 57 × 111 mm 98 × 56 × 109 mm
Polarity Positive terminal on the right Positive terminal on the right
Technology Conventional flooded Gel
Delivery — —
Weight — 1.3 kg

The YB3L-B column gives the specifications from Yuasa’s product page, as Yuasa is the brand that gives this battery code its name. The other column shows the specifications of the battery sold by Satkit. Capacity is always compared using the same hour rate, and starting current using the same standard.

What does YB3L-B mean?

  • YB: Yuasa’s YuMicron series of high-performance conventional flooded batteries.
  • 3: here, it does indicate the capacity: the YB3L-B has a capacity of 3 Ah at the 10-hour rate.
  • L: the polarity is reversed, with the positive terminal on the right when you face the label.
  • -B: the combination of terminals, vent outlet and case shape. There is no general rule: check the diagram for each battery code.

Battery codes that are easy to mix up with the YB3L-B

Battery code Dimensions Polarity Difference
YB3L-A 99 × 57 × 111 mm + right Almost the same case and the same polarity, but from a different family: check the terminals.
YB4L-B 121 × 71 × 93 mm + right Different case: 22 mm longer, 14 mm wider and 18 mm shorter.

Satkit battery for the YB3L-B

YB3L-B gel motorcycle battery: 12 V and 3 Ah, 35 A starting current, sealed gel battery.

Before switching to a sealed battery

The original is a conventional flooded battery. An AGM or gel battery can replace it as a maintenance-free option if the motorcycle’s voltage regulator/rectifier charges between 14.0 and 14.8 V at 3000–4000 rpm. If it charges below this range, stick with a conventional battery. A sealed battery has no vent tube, so leave the motorcycle’s vent tube disconnected.

Motorcycles that use the YB3L-B

Search for your motorcycle, scooter or ATV by model and year to find its battery code.

Find my motorcycle battery →

Charging and fitting

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

Satkit battery

YB3L-B gel motorcycle battery shown from the front with both terminals

YB3L-B gel motorcycle battery

12 V, 3 Ah battery with 35 A cold cranking amps, replacing the YB3L-B. Sealed gel technology, maintenance-free. Positive terminal on the right.

Where to buyfrom €15.99

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

Sources

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