Day 1: What is an eBike, really?

You've probably seen them on bike paths, leaning against coffee shop walls, or parked outside offices. But unless you've ridden one, an eBike can feel like a black box — part bicycle, part gadget, entirely mysterious. Today we crack it open.

An eBike is a bicycle with three added components: an electric motor, a rechargeable battery, and a controller (the system that connects your pedaling input to the motor's output). Everything else — the frame, wheels, gears, brakes — works exactly like a regular bike. The motor doesn't replace you; it assists you.

There are three broad classes of eBike, defined by how the motor engages:

Most city and commuter eBikes are Class 1 or Class 3. Class 2 (throttle) bikes are common in North America and feel closest to a moped when you use the throttle.

Knowing which class you're looking at changes everything downstream — where you can legally ride it, whether it needs registration in your state or country, how fast you'll actually travel, and which bike fits your use case. A Class 3 commuter bike is a serious speed machine compared to a Class 1 trail bike, even if they look similar on the shelf.

It also reframes how you think about the motor. An eBike motor is a multiplier, not a replacement. On a typical Class 1 bike, if you're putting out 100 watts of human effort, the motor might add another 100–250 watts on top. You still do real work; you just go further, climb hills more easily, and arrive less sweaty.

The Specialized Turbo Vado SL is a Class 3 pedal-assist commuter bike. Its motor engages the moment you start pedaling and cuts off once you hit 28 mph. The battery sits inside the downtube, so from a few feet away it looks like a regular road bike. Riders who commute 15–20 miles each way report charging the battery every 2–3 days — about the same inconvenience as charging a smartphone overnight. 2

That "invisible motor" design is a deliberate trend in the category — manufacturers increasingly want eBikes that don't announce themselves as electric.

Take 5 minutes and do this: look up one eBike currently available in your area (a local bike shop's website, or a retailer like REI, Trek, or Decathlon). Find its product page and locate three pieces of information:

Don't worry if the terms are unfamiliar — we'll cover motor types on Day 3 and battery capacity on Day 5. For now, just get comfortable finding the spec sheet. That habit alone puts you ahead of most casual shoppers.