Varta

Varta YB4L-B · Motorcycle battery 12V 4Ah 50A

Reference: BOL-VARTA-504011005 · EAN 4016987168905

Varta YB4L-B (ETN 504 011 005, also written 504011005): motorcycle battery with 12 V, 4 Ah and 50 A cold cranking current, measuring 121 × 71 × 93 mm, with the positive terminal on the right.

Voltage
12V
Capacity
4Ah
Cold cranking amps (EN)
50A
Technology
Lead-acid
Dimensions (L × W × H)
121 × 71 × 93 mm
Polarity
Positive terminal on the right
Price: €96.63
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Where the Varta YB4L-B fits

The Varta YB4L-B is made for motorcycles, scooters and quads. It handles frame vibration and idle periods better than an adapted car battery.

At 4 Ah it is a small battery, typical of 50 to 125 cc scooters and light motorcycles. In the Varta catalogue, the YB4L-B belongs to the Powersports SLI Freshpack line. The full range of Varta batteries

Varta YB4L-B codes and part numbers

This is how the Varta YB4L-B appears on the label and in parts catalogues:

Commercial referenceYB4L-B
ETN code504011005 (also 504 011 005)
Manufacturer short codeB4L-B
EAN4016987168905
Base hold-downB00
Terminal typeY5
Also known asVarta 504011005 · Varta 504 011 005 · Varta B4L-B
Not to be confused withVarta YB3L-B (3 Ah, 30 A), Varta YB5L-B (5 Ah, 60 A), Varta YB7L-B (7 Ah, 74 A)

Equivalents and alternatives to the Varta YB4L-B

Same dimensions and polarity as the YB4L-B, with similar capacity and cranking power; as a conventional battery, the YB4L-B can also be replaced by an EFB or AGM of the same size if you want more cycles.

ModelTechnologyCapacityCold cranking (EN)Dimensions (mm)
Exide EB4L-BLead-acid4 Ah50 A120 × 70 × 95
Fulbat FB4L-BLead-acid4.2 Ah56 A120 × 70 × 92

Varta YB4L-B vs YTX5L-BS and YTX5L-4 (FA): differences

What sets the YB4L-B apart from its neighbours in the Varta range:

ModelCapacityCold cranking (EN)Dimensions (mm)PositiveWeight
Varta YB4L-B (this one)4 Ah50 A121 × 71 × 93right1.65 kg
Varta YTX5L-BS4 Ah80 A114 × 71 × 106right1.83 kg
Varta YTX5L-4 (FA)4 Ah75 A113 × 70 × 105right1.8 kg
  • Varta YTX5L-BS: the same capacity, 30 A more cranking power, a different case (114 × 71 × 106 mm), AGM technology.
  • Varta YTX5L-4 (FA): the same capacity, 25 A more cranking power, a different case (113 × 70 × 105 mm), AGM technology.

Before ordering the YB4L-B, check this

  • Cold cranking: 50 A (EN), equal to or higher than the original.
  • Capacity of the YB4L-B: 4 Ah; the same as your current battery or slightly more is fine.
  • Polarity of the YB4L-B: positive terminal on the right (if yours has it on the other side, the cables will not reach).
  • The YB4L-B needs 121 × 71 × 93 mm of space: measure it with the hold-down clamp in place.

Frequently asked questions about the Varta YB4L-B

Varta YB4L-B or YTX5L-BS?

Compared with the YB4L-B, the Varta YTX5L-BS has 30 A more cranking power and AGM technology. If your current battery says 80 A or more, choose the YTX5L-BS; if it says 50 A or less, the YB4L-B is enough. Mind the space: the YTX5L-BS measures 114 × 71 × 106 mm.

Is the Varta 504011005 the same battery as the Varta YB4L-B?

Yes. 504011005 is the ETN code Varta uses for its YB4L-B battery, so you can search for it by either code.

How much does the Varta YB4L-B weigh?

The YB4L-B weighs 1.65 kg. For reference, the Varta YTX5L-BS (4 Ah) weighs 1.83 kg.

Which battery is equivalent to the Varta YB4L-B?

With the same dimensions, polarity and similar capacity you have the Exide EB4L-B and Fulbat FB4L-B. As the YB4L-B is a conventional battery, an EFB or AGM of the same size also works.

Which side is the positive terminal on the Varta YB4L-B?

The YB4L-B has the positive terminal on the right, looking at the battery from its long side with the terminals closest to you.

How do I stop the motorcycle battery going flat in winter?

Connect it to a maintenance charger or disconnect it if the bike will sit for more than a month. A flat motorcycle battery sulphates in a few weeks.

Lead-acid technology in the YB4L-B

Inside, the YB4L-B is classic lead-acid: liquid electrolyte and lead plates. If the YB4L-B is left discharged for weeks it sulphates: a maintenance charger prevents this.

Other options if you are unsure about the YB4L-B

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