Derby cycle PEDELEC IMPULSE EVO User Manual page 125

Description
Motor noise
7.2 Battery
Display Description
 5 LEDs flash quickly
 The 1st LED flashes
quickly
Range seems too short
EN-60 Original User Guide | Pedelec Impulse Evo Version 1
Cause
The reasons for motor noise are diverse - mechanical faults are not always to blame. For example, the following factors can negatively influence
noise:
» Excessively high cadence with low load
» Very high power required (when riding uphill for example)
» The shape of the cycle frame
» Chain drive (as opposed to gear hub)
Cause
a) Battery is flat and is disabled
b) The battery is overloaded
There is a charge fault
a) The range depends on:
» Ride profile
» Assist mode
» Tyre pressure
» Riding style
» Physical condition
» Overall weight
» Outside temperatures
» Battery capacity
» The route selected
» Smartphone charging via display
Remedy
a) If the battery is flat, it will work again briefly following a short recovery period, then switch off
again. It needs to be charged now.  6.3.1 Charging a battery Page
b) If the battery is overloaded, it switches on again after a short recovery and can be used
normally
Immediately unplug the charger from the socket. If the problem persists, a new charger is
required.
a) There are many reasons why the range appears too short. Defective components are not always
to blame.  5.4.1 Range Page EN-50.
EN-56.