Yuasa Car battery YBX3055 12V 40Ah 340A (YBX3000 series)

The Yuasa YBX3055 is a compact 12V starter battery from the YBX3000 SMF series (Sealed Maintenance Free), which is often used as a modern replacement for older types such as the DIN 54027. It is specially designed for small Asian cars that require the narrow JIS housing format B19/B20 (approx. 19 cm length) in combination with the arrangement positive terminal left. With a capacity of 40 Ah and 340 A cold cranking current, it offers reliable performance for vehicles such as the Daewoo Matiz, Hyundai Atos, Suzuki Alto or Toyota Aygo. Thanks to the sealed double lid, it is completely maintenance‑free.

Highlights at a glance

• Up to 30,000 engine starts: Reliable starting power for daily use in small cars, specially optimised for city traffic.
• Compact JIS format (B19L): Special dimensions (187x127x227 mm) for very small battery compartments, with positive terminal on the left side.
• Sealed tilt double lid: SMF technology prevents acid leakage, reduces water loss by 30% and makes the battery maintenance‑free.
• VDA rollover test passed: Meets high safety standards and remains sealed even when tilted.
• Thin terminals (JIS T3): Equipped with the common Asian thin terminals (positive terminal diameter approx. 14.7 mm).
• State of charge indicator (SOCI): The integrated "Magic Eye" allows a quick check of the battery status at a glance.
• Integrated carrying handle & flame arrestor: Makes installation easier in the often confined engine compartments and protects against sparks.

Features

FAQs about the Yuasa YBX3055

What is the difference to the YBX3054?

Both batteries have exactly the same dimensions and performance values. The only difference is the terminal arrangement.

• YBX3054: Positive terminal right (Layout 0).
• YBX3055: Positive terminal left (Layout 1). Please check before buying: If you are standing in front of the battery, on which side is the positive cable?

What does DIN 54027 mean?

This is an old type number. Batteries with the code 54027 were typically 12V 40Ah batteries with positive terminal left and thin terminals. The Yuasa YBX3055 is the modern, maintenance‑free successor to this battery type.

Does this battery have thin or thick terminals?

The YBX3055 has thin terminals (type 3 / T3). The positive terminal has a diameter of approx. 14.7 mm. This is typical for Asian small cars. If your vehicle has thick standard clamps, this battery will not fit (or only with adapters).

Does this battery fit in a Suzuki Jimny or Vitara?

This depends on the year of manufacture and the engine. Some variants use this small B19 size (YBX3055). However, many larger models require the slightly longer "NS60" size (approx. 24 cm long, e.g. Yuasa YBX3057). Please measure the length of your old battery: Is it approx. 19 cm (YBX3055) or approx. 24 cm (YBX3057)?