We can help. We recommend you refer to any manufacturer's guides as well as our advice. Our experience includes taking into consideration the number of charge cycles, depending on the battery capacity (approx 500 for 36V 10.4Ah).
Lithium ion batteries lifespan is dependent on management of the charging. As Li-ion batteries have no memory effect, the best use of one charge cycle is to bring it back up to full when down to around 20%. Do not cut yourself short though if you are planning a longer ride! A partial charge of 20 to 100% is more efficient than charging each day or when you still have significant battery storage available.
We do not advise our customers to conduct 3 x full discharge cycles for new bikes as this is not something recommended by our battery manufacturers.
If you are planning on not riding for more than a few weeks, we recommend storing your bike with a battery level of around 70-80%. This is the level for batteries we receive in bikes or from our battery supplier. It is optimised for longer term storage.
Battery replacement is required when the battery no longer holds a charge or if the battery becomes damaged. Li-ion products do degrade over time and this is widely researched and publicised. It is not always the case but a degradation of 30% in the first year can occur and is considered to be within specification. We have many customers with batteries lasting over 5 years but it is dependent on a wide range of individual factors as well as the battery technology, including gross load, terrain ride style and demand on the motor and variability on draw on the motor.
Warranty terms on batteries are generally shorter than the warranty on bike frames. Please check your warranty terms as they do vary by manufacturer.