Kalkhoff Fast Pedelec User Manual - 7   Battery

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V User Manual Impulse Pedelec

7.2   High degree of safety due to battery 

management

›

The battery cannot be damaged as a result of a 

short-circuit. If this were to happen, the battery 

management would switch off the battery. 

›

You can simply leave the battery standing in the 

charger as it has in-built overcharging protection.

7.3 

 Straightforward  storage

›

If you do not need your battery for a while, store it 

at a temperature of +10°C at three quarters of its 

full charge capacity. 

›

The battery management switches the battery to 

sleep mode to prevent it from totally discharg-

ing. This can occur after different lengths of time 

without being used. Depending on the charge state 

of the battery, this can occur earlier with a lower 

charge and later with a higher charge. At the latest, 

the management system activates the sleep mode 

after 10 days without using the battery. The system 

exits sleep mode when you connect the battery 

to the charger or press the “Push” button on the 

battery.

These benefits are available due to highly effective battery 

management that has been adapted to this specific applica-

tion and by tuning the battery for operation with a 250 watt 

motor.

7   Battery 

Your battery is a lithium cobalt battery, the ideal type of 

lithium-ion (Li-ion) battery for this application. One of the 

main benefits of this type of battery is its low weight com-

bined with a high capacity. Li-ion batteries only weigh half 

as much as comparable nickel metal hydride or nickel-cad-

mium batteries. This means you carry less battery weight 

and more battery power. 

7.1 

 Straightforward  charging

›

There is no memory effect. You can therefore fully 

recharge your battery after every trip.

›

Recharge the battery after every trip. This means 

you can set off immediately the next time you use 

your bike and you also increase the service life of 

the battery.

›

If you are not using the battery, you only have to 

recharge it after 6 months. 

7.1.1   Learning  cycle

Once you have fully charged the battery for the first 

time, you must run it down until the system switches 

off. This procedure (a so-called “learning cycle”) is 

necessary so that the battery management recognises 

the changes in the capacity caused by age and wear 

and tear, in other words, the performance level of the 

battery. 

Afterwards, the capacity of the battery is calculated 

anew and correctly represented. 

With this procedure, you can prevent a sudden loss of 

electrical assistance during an extended trip.