How to Maintenance Your Ebike Battery in Winter
Battery care is very important for the efficient supply of energy to your bike. Our batteries are made of lithium-ion cells, which have no memory effect. This means, these batteries can not only be recharged when they are completely empty but at any charge level. In addition, this battery technology has a long service life - which depends on the number of charging cycles as well as the type and duration of use.
Batteries have a battery management system (BMS) inside.The oversight that a BMS provides usually includes:
- Monitoring the battery
- Providing battery protection
- Estimating the battery’s operational state
- Continually optimizing battery performance
- Reporting operational status to external devices
However, the self-discharge of the battery can´t be stopped by the BMS. Although the self-discharge rate is very low, it can cause irreparable damage to the battery cells - despite the slow process. Therefore, it´s important to note: The optimal state of charge for a longer storage period is between 30 and 70%. Do not connect the battery to the charger during the entire storage period (permanent charging).
- Do not store it fully charged or on the charger all winter.
- Store the battery with a charge level between 40% and 80%. The average battery charge is 30 miles.
- Store the battery in a location that will not experience extreme temperatures (either hot or cold), such as an insulated garage or in your home.
- Store the battery in a dry location.
- Don't leave the battery on the charger for prolonged periods of time. Although most chargers have an auto-off function, you'll want to be sure there aren't any issues and store the battery off the charger.
- Every three months, check the charge level of your battery. If it has changed, be sure to charge the battery back to the 40% - 80% level.
- Charge the battery in a location where a hot battery or charger (should a malfunction occur) would not cause a damaging fire.