Eas-e electric bicycle

The battery of an electric bike is a kind of energy reservoir for the assistance system. The battery range is closely linked to the bike and depends on many parameters and factors that have a direct influence. It can vary from one to three times (or even more) depending on:

• Urban: with many stops/starts that consume energy
• In the countryside: more fluid and linear
• Mountain paths with climbs where the electric assistance will test the battery over a sustained period with routes where the total altitude difference can be significant

• For example, a 25 kg Dutch bike with a very upright rider position offers significant air resistance for a person weighing 90 kg, which "consumes" more energy than a person weighing 70 kg.

• Tire rubber type, structure, size, but above all the optimal inflation of the tires! Using an electric bike with under-inflated tires can lead to a 30% loss in range (km).

• In cold weather, a battery naturally loses its range. The optimal temperature is between 15 and 25°C.

• If the rider is in eco mode, they will naturally cover a longer distance than in turbo mode.

Integrating the battery into the frame gives additional stiffness and better weight distribution, making the bike more dynamic. The battery is also better protected in case of impact.

48V 13Ah (624Wh) Battery = 120 km* - 70/75 kg rider in eco mode.

36V 16Ah (576Wh) Battery = 80 km* - 70/75 kg rider in eco mode.

36V 10Ah (360Wh) Battery = 70 km* - 70/75 kg rider in eco mode.

The first and main factor when it comes to a fully charged battery range is the energy stored in it, which we measure in watt-hours (Wh) by multiplying the battery voltage (V) by the amp-hours (Ah). For example, a 48V13Ah battery has 624Wh of energy when fully charged, while a 36V16Ah battery has 576Wh of energy.

Once we understand the concept of energy, we need to consider the motor's power, which will dictate the energy consumption. A bike used legally in the EU can have a motor with a maximum nominal power of 250W, but it doesn't consume the same amount of energy when working at its maximum capacity on a climb of more than 20% (it can have peak consumption of up to 150% of its nominal power) as it would on flat terrain.

Once understood, we can also say that it doesn't help if the rider climbing 20% does so in low assistance mode and does most of the work pedaling, while the rider on flat terrain does so with high assistance mode and leaves all the work to the motor... This factor, which is clearly key in range, is influenced to a lesser degree by other factors like the rider's weight, position, cadence, and how often they stop and start, as starting creates consumption spikes.

Terrain type (uphill or flat), surface (asphalt or road), and even wind (headwind) and tire type and geometry also have consequences.

For all these reasons, it's very difficult to provide precise and reliable information about a bike's range. The range information we provide for our products is based on a 75kg rider using the bike in a normal way, meaning mountain bikes on mixed paths with ascents and descents, or urban bikes for city commuting with frequent stop-and-go cycles.

We do not advertise maximum ranges, but real ones, from tests where we don't aim for particularly low consumption. We've reached over 200 km ranges seeking maximum efficiency, but we feel it would be dishonest to advertise these since the resource usage was not typical.

We can only add that what sets Moma electric bikes apart from the competition is precisely the range. 100% of the professionals who tested them were impressed with this factor. For us, it is the essential aspect of this type of vehicle, and we work every day to improve it as much as possible with batteries that store a lot of energy and very efficient motors that consume the least possible energy.