E-bikes use lithium-ion batteries, similar to those in your cellphone or laptop, but bigger. Batteries can be fixed to the inside or outside of the bike. Some can be removed for charging. They come in different sizes. Choosing the right battery and caring for it properly can help you maximize its life. Always use the manufacturers’ battery and charging cable. If not used or stored properly, or if damaged, these batteries can be a fire hazard. Here are some tips to keep you and others safe.
Charging basics
- Read the instructions that come with your e-bike
- The first charge is super important. Follow the manufacturer’s instructions carefully
- Use the charger that came with your e-bike. If you need a new one, get it from the manufacturer
- Plug the charger into the wall first, then into the battery (unless the manufacturer says otherwise)
- Plug your charger directly into the wall, not into an extension cord or power strip
- Don’t leave your battery unattended while charging
- Don’t charge your bike in front of a doorway or exit
- Avoid extreme temperatures when charging or storing your battery
- Keep batteries out of direct sunlight and don’t charge them in the rain or wet conditions
- Unplug your battery once it’s charged. Don’t leave it plugged in all the time
- If your battery is damaged, don’t charge it – dispose of it safely
Battery care
- Good habits can extend your battery’s life
- If your battery is external, remove it before transporting your bike to avoid damage
- Follow the manufacturer’s guidelines for charging and storage
- Don’t modify your battery
- If you need a replacement battery, purchase directly from the manufacturer or distributor
- For long-term storage, keep your battery between 30-70% charged. Don’t store it fully charged or fully depleted
- If your battery is damaged, bulging, or overheating, don’t use, charge or store it. Dispose of it safely
Recycling and disposal
- Don’t put lithium-ion batteries in curbside recycling or trash
- Find a local drop-off site through 1-800-Recycle
- Search for local options at The Battery Network (formerly known as Call to Recycle) e-Bike Drop Off – The Battery Network
- Call your local fire department for assistance for damaged batteries