Varta YB4L-B · Motorcycle battery (504011002) 12V 4Ah 50A

Varta YB4L-B Powersports SLI Freshpack 4Ah 50A 12V Motorcycle Battery

The Varta YB4L-B motorcycle battery (reference 504011002) is the 12 V, 4 Ah model delivering 50 A of cold cranking power (EN), from Varta's Powersports SLI Freshpack range, designed for motorcycles, scooters, quads and personal watercraft. Its 121 × 71 × 93 mm dimensions and positive terminal on the right make it the exact replacement for the 4 Ah battery fitted as standard in many motorcycles.

• Performs well in the cold and after periods of inactivity.
• High cranking peak in a compact, lightweight format.
• Direct replacement for the original motorbike, scooter or quad battery.
• Construction built to withstand the vibration typical of two-wheelers.

Vehicles compatible with the Varta YB4L-B battery

This battery is listed as compatible with more than 207 vehicles from manufacturers such as Peugeot, MBK, Aprilia Motorcycles, Yamaha, Sachs and Malaguti. If you are looking for a battery for a Peugeot or an MBK with these dimensions, the YB4L-B is one of the standard replacement references. The compatibility list also includes models from Derbi, Piaggio, Gilera, Italjet, Hercules, Vespa, Suzuki and KTM. Not sure whether it is the right one for your bike? Check in seconds by entering your registration number in our finder.

Format and fitting of the Varta YB4L-B

Its external dimensions are 121 × 71 × 93 mm and it weighs 1.84 kg. The positive terminal on the right determines which side the cables sit on: it is the detail that causes the most buying mistakes, so it is worth checking before you order. Checking the three dimensions and the terminal positions before buying avoids the most common mistake when replacing a battery.

The Varta YB4L-B and the Powersports SLI Freshpack range

The Powersports SLI Freshpack series comprises Varta's lead-acid motorcycle batteries supplied with the electrolyte packed separately ("freshpack" format): they are filled and activated at the moment of fitting, which ensures the battery reaches the workshop in peak condition.

It is the go-to option for motorcycles, scooters and quads with conventional starting: a strong cranking peak, tolerance to vibration and a keen price, with Varta's manufacturing reliability.

On two wheels, vibration and extreme temperatures take a heavy toll on the battery. This range reinforces the internal plate mounting and seals the unit to withstand that use, delivering the instant burst of cranking power a motorbike or quad engine needs after weeks standing idle.

Why choose a Varta battery

A good share of the vehicles on Europe's roads left the factory with a Varta fitted: the brand has been supplying the assembly lines of the leading automotive groups for decades. Replacing with a Varta means, in practice, giving the vehicle back the battery its manufacturer intended.

Behind Varta is Clarios, one of the largest manufacturers of starter batteries in the world and a supplier to the assembly lines of numerous car brands. That German engineering heritage translates into reliable starting year after year.

Varta's production combines automated lines with verification of more than 100 parameters per unit; that traceability is what underpins its reputation for reliable starting throughout the battery's life.

Manufacturer's warranty

The Varta YB4L-B battery comes with the official manufacturer warranty.

Care and maintenance

If the bike goes unused for long spells, a trickle charger greatly extends the battery's life and prevents sulphation. Storing it somewhere dry and checking the terminals at the start of each season helps it start first time. Motorcycle batteries suffer in the cold and when left idle: in winter, a maintenance charger stops the battery from discharging completely. With this care, it will typically deliver well over several years of service.