No, it's generally not necessary. According to Gazelle, it's best to charge the battery up to 70% and keep it disconnected. Don't leave it completely empty, but don't leave it on continuous charge either.
What happens to an electric bike battery when it's not used for a long time?
Your electric bike 's battery is the beating heart of your e-bike. But what happens if you don't use it for a long time? For example, during the winter, or if you leave your bike for a while?
In this article, we explain the effects of prolonged inactivity on your bike battery, what to do (or avoid), and how to maximize the life of your electric bike.
What happens to a battery if it's not used for a long time?
If you do not use a battery for a long time, this may lead to :
- Deep discharge: The battery discharges slowly, even when not in use. If the voltage level falls too low, this can cause irreversible damage.
- Loss of capacity: the battery recharges less well and discharges more quickly.
- Reduced performance: Range is reduced and it may take longer for the motor to provide assistance.
Caution: Even when the bike is stationary, the battery management system (BMS) consumes a small amount of energy.
What should you do if you're not using your e-bike for a while?
To avoid damaging your electric bike's battery, follow these tips:
✅ To do :
- Charge your battery to between 50 and 70% before storing.
- Store the battery at room temperature (between 10°C and 20°C).
- Disconnect the battery from the bike, especially in the event of frost.
- Check the charge level every 2 months and recharge briefly if necessary.
❌ What not to do:
- Store battery completely discharged.
- Leave the battery connected at all times (unless otherwise specified by the manufacturer).
- Store the battery in a cold or damp place (such as a garden shed in winter).
When should I consider a revision?
If you find that your bike has less range, or that the battery is discharging rapidly, an overhaul may be the answer. It's often cheaper than buying a new battery.
Overhauling consists of replacing the worn cells inside the battery, while preserving the casing. It's both an ecological and economical solution.
Conclusion
Prolonged inactivity on your electric bike is no problem as long as you know what to do. By storing your battery correctly, you can extend its life and maintain your range. You should also consider an overhaul or an additional anti-theft device for added security and durability.
Frequently asked questions
Should I leave my battery connected if I'm not using it?
How long can a battery last if I store it properly?
With proper maintenance and storage, a battery can last an average of 5 to 7 years. By paying close attention to its use, you can avoid costly replacements or overhauls.
How long can an electric bike battery be left unused?
You can leave an electric bike battery unused for several months, provided you store it correctly (charged between 50 and 70% and at room temperature). If you leave it inactive for more than 6 months, you risk a loss of capacity or a deep discharge. So check the battery regularly and recharge it if necessary.