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Questions and answers relating to the e-bike battery.

The battery is one of the most important parts of the e-bike. It supplies the motor with the electric power required to provide assistance when riding.

This is why it is hardly surprising that the battery is one of the most discussed e-bike topics. How long does my battery last? Do I have to be aware of anything in particular in winter? Question after question – we have the answers.

What makes lithium-ion batteries so special?

All FLYER e-bikes are equipped with high-performance batteries that contain specially developed cell types for use with e-bikes. They offer an ideal balance between capacity, performance, weight and service life. The special feature of lithium-ion batteries is their particularly high energy density. This means they can store more energy and are relatively low in weight.


Charging the battery.

What is the best way to charge my battery?

You can charge the battery separately or directly on your FLYER e-bike at any time without shortening the service life. Interrupting the charging process doesn’t damage the battery. FLYER and Bosch batteries are characterised by long energy storage with no memory effect.

How long do I need to charge my battery for?

The charging time depends on the battery capacity. Our Bosch PowerPack 500 battery can be half charged after 1.5 to 2 hours, for example. You’ll need a maximum of 4.5 hours to fully charge the battery.

What happens if I charge the battery for too long?

A battery management system is integrated into the FLYER battery to protect the battery against overcharging, undervoltage and overheating. Single cell monitoring ensures safe, reliable and gentle charging.


Performance and range.

How long is my battery service life?

In principle a battery loses approximately 10% capacity per year. However, the exact service life cannot be predicted as this depends on the nature and duration of the demands made. We recommend switching to a new battery after approximately 4 to 5 years.

Can I prolong my battery service life?

Following simple rules for protection, transport and correct storage can have a positive impact on the service life of a battery.

Keep your e-bike battery in a dry environment and protect it from direct sunlight. A room temperature of 15 to 20 degrees Celsius is ideal for storing your battery. The battery should also be charged at room temperature. When transporting your e-bike, it is best to remove the battery and store it safely in your car.

Can I test the performance and capacity of my battery?

If you’d like to test the performance of your e-bike battery, ask your FLYER dealer.

How far can I get with a charged battery?

The range depends on a great deal of factors so an exact prognosis isn’t possible. The size of the battery, the power of the motor and the assistance level selected have the biggest impact on the range. However, the topography, surface, pedal frequency, tyre pressure, outside temperature and total weight, for example, are also important.

The Bosch e-bike system range assistant gives you an overview of the different influences of various factors on the range.

Does my battery work with any e-bike?

No, batteries are only compatible with their product line and should not be used with other models or brands.

Do I need to be aware of anything in winter?

The cold reduces a battery’s performance. You should ideally store your e-bike battery at room temperature in the winter and attach it just before the trip.

Follow our tips to ensure that your battery delivers an excellent range in winter too when temperatures start to fall.


Cleaning and disposing.

I would like to clean my e-bike. Do I have to be aware of anything?

Remove the battery before you clean your e-bike. Try and keep water out of the battery compartment. If needed, you can get protective caps for the battery compartment from your FLYER dealer in order to prevent direct contact with dirt and water.

You can clean the battery with a damp cloth when required. Avoid using strong detergents as these may damage the surface.

Can I have my battery repaired?

If you think that your battery is no longer working properly, let a FLYER dealer check it. He/she will establish if the battery really has a defect or if there is some other problem in the electronics.

Under no circumstances should you try to fix the battery yourself or anything like that – instead, always seek advice from your dealer.

Where can I dispose of my e-bike battery?

Bring your e-bike battery to your FLYER dealer. He/she will check if the battery really has a defect or if there is some other problem. If you battery has a defect, your FLYER dealer will dispose of it properly. You already paid to have the battery disposed of when you bought your battery.