Ebike Battery Care During Winter: Everything You Need to Know

An e-bike is not worried by cold or wet conditions. Its frame and components are splash-proof and can cope with almost any temperature. A battery, on the other hand, does not like low temperatures. The frosty climate reduces its capacity and voltage, which in turn affects the range. But why is that? The lithium ions in e-bike batteries float in a liquid electrolyte. As the temperature drops, the electrolyte becomes more viscous and solidifies, reducing its conductivity. Consequently, the lithium ions migrate slower from anode to cathode and vice versa. A battery only produces around 50 % of its actual output at temperatures below -20°C. e-bikes are not for made for the polar circle.

These 3 tips will help you get your e-bike battery through the winter.

Batteries are sensitive to extreme temperatures. Their ‘comfort zone’ is between 10 and 20 degrees Celsius. We thus recommend that you store the battery at room temperature and only fit it into your e-bike shortly before setting off.

Store The Battery Inside
If the bike is stored in a cold place overnight, such as an outside shed or garage, the battery gets cold. During this time, the gel inside will stiffen up and therefore reduce the range available – especially inconvenient if you planned a long-distance morning ride or commute.

We understand it’s not convenient for everyone to store the E-bike inside; therefore, we advise removing the battery from the bike and bringing the battery into the house when not in use.

The bike itself can remain in the shed or garage, as it’s only the battery that’s affected by the cold. Then whenever you want to ride, re-fit the battery as normal.

Charge The Battery Inside
Similar to the point above, if the battery is charged in a cold environment, the charge won’t move as freely around the battery and will therefore struggle to achieve full capacity. Not only will this affect the range as the battery will never reach a full charge, but it can also reduce the lifespan of the battery.

Therefore, whenever you need to charge the battery, we recommend removing it from the bike and placing it on charge indoors. It’s also worth pointing out that the battery should be at room temperature before charging it, so if you’ve just come back from a cold ride, let the battery rest inside for several hours before plugging it in.

Remove The Battery If Unused
If riding in through the winter months isn’t your thing, and the bike will be unused for a period of time over winter, then we’d recommend removing the battery from the bike and storing it indoors at room temperature.

Conclusion

Riding in the winter is completely possible and even better, thanks the motor assist, you can bundle up without sweating as much thanks to pedal assist. But it does mean a little extra TLC for your ebike battery. Take care of it, and it will take care of you! Happy riding!

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