You have questions about our products and our company? Then you have come to the right place!
Our FAQ picks up those questions often asked and beyond that we would like to answer further questions all around e-bike batteries and the basics of the lithium-ion technology.
Basics
What is the difference between e-bike and pedelec?
The designation ‘e-bike’ is often used as a generic term for all electrically-driven bicycles. The (S-)Pedelec [(Speed-)Pedal Electric Cycle] is one type of an e-bike, in which the rider is only assisted by the electric drive when pedalling.
When does the original e-bike battery need to be replaced?
An e-bike battery has a service life of around three to five years under normal use with 500 to 1000 charging cycles. If you notice a significant loss of capacity in your battery and the range has decreased over the years, this is an indication that the battery can be replaced.
If there is visible damage to the housing, your battery should be replaced immediately
Some dealers can read out your battery and determine the SOH (State of Health) and the remaining capacity. This will help you decide whether your battery needs to be replaced.
What is a full cycle?
A full cycle means that the battery is completely discharged once and subsequently completely charged up (1 full cycle = 100% of the battery energy charged and discharged). Part cycles are added on.
If an e-bike battery is charged from 20 % to 70 %, subsequently driven down to a remaining capacity of 40% and then again charged up to 90%, this is equivalent to three part cycles:
Part cycle 1 (20% – 70% charged) = 70%-20% / 2 = 0.25 full cycles
Part cycle 2 (70% – 40% discharged) = 70%-40% / 2 = 0.15 full cycles
Part cycles 3 (40% – 90% charged) = 90%-40% / 2 = 0.25 full cycles total cycles: 0.65 full cycles
What is the meaning of SOC and SOH?
SOC or 'state of charge' describes the current charging status of the battery. An SOC of 100% is therefore the equivalent to a fully charged battery. SOH means 'State of Health'.
SOH or “State of Health“ describes the state of health of an already aged, used battery in respect of its ability to achieve required performance parameters compared to a new battery. This means SOH describes the status of aging of a battery.
Example: The original capacity upon purchase was 17 Ah. Now, after two years the capacity is down to 15 Ah. SOC = 15 Ah / 17 Ah * 100% = 88.24 % Only special battery testing devices can establish how much capacity a rechargeable battery can take.
How can I test my e-bike battery?
Your battery can be read out with special analysers (e.g. Akku Vision Test Tower) at your specialist dealer. A detailed report provides information about the condition of your battery
You can also test compatible E-Bike Vision batteries from home via your smartphone using the AV-Toolbox app. This gives you a compact overview of selected battery values.
Can I simply exchange my existing rechargeable battery for an E-Bike Vision spare battery?
Yes, provided the compatibility according to the product description is guaranteed and as long as there is no exception quoted in the product description. As there are many e-bike manufacturers on the market using different frame geometries, it may be possible – in a rare case – that the E-Bike Vision Battery does not fit.
Does the replaced battery also work with the existing display?
Yes, our E-Bike Vision Batteries are seamlessly integrated into the drive system and display both the charged capacity as well as the remaining range.
Is it possible that the replacement battery may destroy my pedelec?
No. In general batteries are only a passive part of the drive system. The motor is the “Master“ and takes energy from the battery as required.
What are the advantages of E-Bike Vision Batteries?
Increased distances: All E-Bike Vision Batteries have considerably more energy than the original batteries. Our E-Bike Vision Batteries achieve a longer range and can therefore be used for longer tours.
More convenience: All our E-Bike Vision Batteries have an additional external charging socket. In connection with our chargers you are now able to charge the battery directly at the pedelec without having to remove it.
Shorter charging times: Especially if you are under time pressure, our 6 A quick charger reduces the charging time by up to 40%.
Lightweight: Our Bosch Lite batteries are lightweight.
Why do E-Bike Vision Batteries have a higher capacity than the original batteries from manufacturers?
This is because we keep up with the development of lithium-ion round cells and subsequently use round cells with a higher capacity or build in more round cells.
What is the range of a E-Bike Vision Battery?
As there does not exist a standardised calculation of ranges, we are unfortunately not able to give a binding statement. The range of a pedelec depends on many aspects. Most important is, of course, the battery capacity on which we always focus while developing each products. There are, however, a lot of restricting aspects which influence the determination of ranges:
- Route profile
- Driver’s weight
- Outside temperature
- Wind conditions
- Support level
- Motor system
- Type and weight of bicycle
- Tyre pressure
- Additional weight of bicycle bags or – baskets
How do I calculate the energy of my battery?
If you know the capacity (in Ah) and also the nominal voltage, you can calculate the energy of the battery:
36 V x 17 Ah = 612 Wh 36 V x 13 Ah = 468 Wh
This also works in reverse.