- Batteries operate best around room temperature. Charge the battery indoors in very cold weather, and keep it indoors until the last second to protect the cells. In colder weather, store the battery indoors and avoid direct sunlight.
- It might be worth getting a battery cover if you ride year-round and often in subzero temperatures.
- If overcharged or discharged persistently, all batteries will be damaged. Make sure you are using the correct charger (never use one that wasn't specifically designed for your battery). Electric bikes that are of good quality are more likely to have BMS (battery management systems) units in the battery, which prevents overcharging and discharging.
- After a lithium battery has reached full charge, you should not leave it connected.
- You should be aware of cheaper batteries with high claims for battery life and the number of charge cycles they will last - they may have been set close to the limits for under and overcharging, leading to premature failure.
- Vibrations and shocks can also shorten the life of the battery when they are handled carelessly or with rough handling.
- Lithium batteries degrade slowly but surely over time whether they are used or not. Check the manufacturer's recommended state of discharge for storage if you need to store a lithium battery for a period of months.
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