Are you thinking about buying an ebike and wondering how long it will last? What about the motor? What about the battery? How about the brakes? I had the same questions.
The figures are geared toward urban or commuter ebike users as opposed to electric mountain bike users, whose wear and tear on parts can be different or more severe.
Lithium batteries typically last about 1000 charge cycles or 3-5 years before their capacity begins to deteriorate.
In general, electric motors will last longer than most other ebike components, but proper care and maintenance will make them last even longer.
On quality tires, normal wear and tear will result in 1,000 - 3,000 miles.
Although brakes can last quite a long time, they are affected by many factors, including weather, road conditions, riding style, and quality of components. Rim brakes can last up to 3,000 miles (5,000 km) before needing to be replaced, and disc brakes can last up to 6,000 miles (10,000 km), depending on how you ride downhill.
Chains normally need to be replaced every 2,000 - 3,000 miles, but this number will likely be reduced with a mid-drive motor and more stress on the chain and sprocket.