7
QWIC Electric bicycles Manual
3
Battery
3.1 Range (optimum range)
What size is the tank in my electric bicycle?
The total range of your e-bike without charging it in the mean time, is
called the optimum range. You would probably like to know what the
maximum distance is that you may travel with 1 full battery. This is not
easily calculated as the capacity of the battery is influenced by many factors.
Capacity battery
Batteries are often being compared based on capacity (Ampere-hour). This does
not give the right image of capacity, as the battery pack is also influenced by
battery voltage while being discharged. A single display of ’10 Ah) does not say
anything about the capacity of the battery and is misleading.
The best way of comparing batteries is to look at the amount of watt hour (Wh)
delivered by the battery. The amount of Wh regards the capacity of the battery
pack while being discharged, as well the total amount of density of the pattery
pack. The higher the amount of Wh, the higher the optimum range is.
For example:
A Trend battery needs a capacity of 10 Ampere/hour (Ah)
and an electric tension of 36 Volt (V). This battery provides:
10 Ah x 36 V = 360 Wh.
QWIC supplies bikes with 216 Wh and 360 Wh batteries. Have a look on page 27 for
an overview on specifications per bicycle.
