Your frame serial number is the single most useful thing to record about your e-bike. Police use it to match recovered bikes to owners, and buyers use it to check a bike before they pay. Here is where to find it.
Where to look
- Under the bottom bracket. Turn the bike over or crouch down and look underneath, where the pedal cranks meet the frame. This is where most brands stamp it.
- On the seat tube or head tube. Some brands put it near the bottom of the seat tube, or on the front of the frame behind the handlebars.
- On the rear dropout. Look at the flat plates where the back wheel bolts on.
- On a sticker or label. Many e-bikes also have a label with the serial and a barcode. Labels can be peeled off — the stamped number is the one that counts.
- In your paperwork. The receipt, warranty card or manual often has the serial printed on it.
Reading it correctly
- Serials are usually 6–20 letters and numbers. Write down every character, in order.
- Watch for look-alikes: 0 (zero) and O, 1 and I, 5 and S, 8 and B.
- Ignore model codes and size markings that sit next to it (like “L” or “54”) unless the brand’s manual says they are part of the serial.
Record the other serials too
Batteries and motors have their own serial numbers — usually on a label on the battery case and on the motor housing. They help prove a bike is yours if the frame number is ever damaged, and they help a buyer check that the battery belongs with the bike.
Photograph it and register it
Take a clear photo of the stamped serial and keep it with a photo of the whole bike. Then add it to a free EbikeMate Bike Passport — your serial, photos and receipt stay in one private place, and if the bike is ever stolen you can flag it in one tap.
This guide explains things in general terms. It is not legal advice. Spotted something out of date? Tell us.