General

The range of (S) pedelecs is a hotly debated topic. Alongside other influencing factors, it depends to a large extent on the energy content [Wh] of the battery. However, size and weight restrictions limit the size of the battery and thus the available energy. As with electric cars, users want the longest possible range, even if they may never need it in everyday life. Manufacturers are responding to this with ever larger batteries and additional battery solutions.

Stromer launched one of the largest batteries in the industry in 2022 with the ST7 model and its 1440 Wh battery. This enables ranges of 80 to 100 km with full support. This means that commuters will generally also get their money's worth. With the BQ1440 battery, Stromer has also exploited the size of the frame and down tube. A further escalation of the battery size in Wh should only be possible with a battery in the frame triangle or a separate additional battery (extender). An example of this is the niche brand Speedped, which offers frame batteries in the frame triangle with up to 2430 Wh.

Range factors

Like the fuel and energy consumption of cars, the manufacturer's range specifications should be treated with caution. While there is a WLTP standard for cars, there is no such standard for (S) pedelecs. Direct comparisons are difficult because the possible range depends on (very) many factors:

• System weight (rider, luggage, bike)
• Selecting and setting the speed levels
• Personal performance (fitness of the driver)
• Efficiency and type of drive (rear or hub motor, rear derailleur)
• Route profile
  • Altitude meters
  • Number, steepness and length of the climbs
  • Underground
  • Stops & Goes
• Weather conditions:
  • Temperature
  • Wind conditions (tailwind or headwind)
  • Rain, snow, dry...
• Air resistance
  • Seating position
  • Driver size
  • Luggage
• Driving technique
  • Cadence
  • Switch ergonomics
  • Recuperation Yes/No
• Tire pressure and tread
• Condition of wearing parts (e.g. chain)
• Condition of the battery (ageing, state of charge)

Range tables / calculator

A general range table for different battery voltages/capacities can be found on Amazon, for example. Based on my experience, it seems quite realistic to me.

The Swiss manufacturer Speedped specifies the following ranges for its S-Pedelecs:

With the Bosch online Range calculator can be used to estimate the range after entering various parameters (image).