Below is a guide to the main concerns and frequently asked questions about e-bike batteries. Of any part of an E-bike, this is the one we get asked about the most.
How long will my battery last?
How long your battery lasts depends very much how you look after the battery but assuming it is looked after well, the manufacturers will usually expect the battery to have around 60% charge after 1000 ‘charge cycles’* as, no matter what you do, batteries will degrade over time.
How easy/how much does it cost to replace?
A lot of the large companies that manufacture batteries will have them available to buy for ten years from the last production run of the particular battery, so most batteries will be easily available for a decent length of time after you buy your bike.
Smaller capacity batteries can cost from £400 but it depends greatly on the style and capacity.
Battery Replacement - example
How can I charge the battery?
For most modern E-bike batteries, you can charge the battery while connected to the bike and can also remove the battery to charge it. For a small number of the lighter E-bikes, you are not able to remove the battery and have to charge it on the bike.
How far can I go on one charge?
This depends on the size of the battery you opt for. As a general rule, for every 100 w/h (watt/hours), you will get 10 miles. Most modern batteries will give you at least 25 miles (40km) but that is for the smaller batteries. Some of the dual battery bikes will give you easily over 120 miles (193km)
How long do batteries take to charge?
Again, this depends on the size of the battery, but it can be as little as 4 hours for a full charge, but the majority of batteries will take 6 or 7 hours to fully charge. If you are short of time, it only takes approximately 2 hours to give the battery 50% charge.
All Electric Bikes
How do I take care of my battery?
I usually advise of three main care tips: -
1) Please, under no circumstances (think feeding Gremlins after midnight), leave the battery sitting on zero charge, especially if you aren’t going to use it for a few days. Modern batteries will lose a bit of charge and then hibernate. If they lose charge while at zero, it can damage the cells and the battery might not wake up again.
2) If you are storing the battery for a length of time, try to avoid leaving it charged to 100% as this can also damage the cells affecting the longevity. 60% is ideal.
3) Avoid leaving the battery in very cold temperatures or very warm temperatures as this will affect the lifetime of the battery and how far you get from each charge. Avoid leaving the battery in direct sunlight.
*A ‘charge cycle’ is a full decharge and a full recharge