What power should you choose for climbing hills with an electric bike?
To choose an electric bike capable of climbing hills without difficulty, several criteria are essential: motor torque, battery range and power, the type of assistance sensors, and more. In this article, we help you make the right choice!
Key takeaways:
- The most important factor for climbing hills is motor torque (Nm): the higher it is, the better the bike will perform on steep inclines. For hilly terrain, choose a motor with at least 60 to 70 Nm, and 80 Nm or more for steeper elevation gains.
- Hills require more battery power: a minimum battery capacity of 500 Wh is recommended to maintain good range.
- A torque sensor provides smoother, more responsive assistance and is especially effective when climbing hills.
Motor power: beware of common misconceptions
Relying solely on the motor’s nominal power (expressed in watts) when choosing your bike is a mistake. In fact, most electric bikes sold in Europe are equipped with a 250W motor, as this is the legal limit for approved e-bikes that can be ridden without registration. However, two 250W motors can offer very different performances depending on their torque, battery power, and other factors.
Motor torque: the main criterion
When it comes to climbing hills, one of the most important factors is motor torque, expressed in Newton meters (Nm). This information is usually listed in the bike’s specifications.
Torque represents the motor’s rotational force. The higher it is, the more capable the bike will be of:
starting easily on a hill
maintaining a good speed on climbs
carrying a heavier rider or luggage without difficulty
What torque should you choose based on the terrain?
40 to 50 Nm: suitable for small urban hills and occasional rides
60 to 70 Nm: a good compromise for hilly regions
80 Nm and above: ideal for steep climbs, mountains, or electric mountain bikes
The figures provided here are general guidelines. Don’t hesitate to ask your retailer for advice!
Battery power
Hills consume more energy. Choosing a more powerful e-bike battery is therefore essential.
Battery capacity is expressed in Wh. Here are our recommendations:
250 to 500 Wh for urban use with some elevation changes
500 to 750 Wh for hilly rides and frequent climbs
750 to 825 Wh for significant elevation gains
The higher the battery capacity, the more you can use high assistance modes without worrying about running out of power. To learn more about electric bike range, check out our guide.
Sensor type: an important factor to consider
There are two types of sensors: the cadence sensor, which activates when the rider pedals, and the torque sensor, which measures pedaling pressure and automatically adjusts assistance. The latter provides a more natural pedaling feel, better responsiveness, and is especially more efficient on hills. For hilly or mountainous regions, choosing a torque sensor is highly recommended.
Other factors to consider
Bike weight: a heavier bike naturally requires more energy to climb hills.
Tires: very wide tires increase comfort and grip, but they also create more rolling resistance. For road climbs, choose tires with good rolling efficiency. Check your tire pressure before riding.
Drivetrain: for climbing hills, choose a wide gear range, use a small chainring, and select a cassette suited to steep elevation changes (modern 10-, 11-, or 12-speed drivetrains provide real comfort in mountainous terrain).
Motor placement: for elevation gains, a mid-drive motor is preferable to a hub motor.
The ideal electric bike for climbing hills
For frequent use on hills or in mountainous terrain, here is the setup we recommend:
| Feature | Our recommendation |
| Motor torque | From 60 Nm |
| Battery power | From 500 Wh |
| Sensor type | Torque sensor |
⚠️ Before buying an electric bike, we recommend visiting a retailer to test different models and ensure that the bike matches your needs.
