Care of the lithium battery
During charging and discharging, the ambient temperature should be in the range +5 °C to +35 °C.
Use of the battery at very low temperatures may result in a severe loss of output.
The battery has a deep-sleep mode and switches itself off after 72 hours unless it is inserted into
a power pack so as to protect it against deep discharge. In this way the energy stored in the battery
is retained even after months without use.
To wake up the battery after 72 hours without use, press the "on" key on the battery’s front panel.
The type of battery used does not have a "memory effect", and so does not have to be discharged
regularly. It is, however, important to remember that the battery must not be discharged too far.
The unit switches off automatically when the battery voltage is too low. However, because there is a
small leakage current even when the unit is switched off, we strongly recommend that the battery
is recharged after use. The battery should be removed from the unit during long periods out of use.
In particular, please observe the following important information on the subject of care and maintenance
of the battery:

You will find further information on care of the battery on our website under
"Download" > "battery & care".

Charging the battery
The battery can be charged either installed in the unit or outside it. The unit can be operated while
it is charging.