Getting started
26
5.1
Charging the battery
Fig. 21: USB port at the bottom
The battery indication is displayed in the upper
right corner of the screen. A fully charged battery
is shown as a solid green battery symbol.
If the battery symbol is red, the display illumina-
tion is automatically reduced to save energy. In
this case, charge the battery or use the Wöhler A
550 in mains operation.
•
Before you plug the USB-recharger into the
outlet, connect it with the analyzer. To do so,
plug the USB connector of the recharger to
the USB port at the bottom of the analyzer.
During the charging process a jack-symbol will
blink in the upper right part of the screen and the
ON/OFF key will blink red.
NOTE!
Recharging empty batteries can take up to 7
hours. You can still go on measuring while battery
charging is in progress. In this case charging time
will be longer.
After the charging time has finished the ON/OFF
key will shine red.
WARNING!
Risk of electrical shock!
Never touch the power supply with wet hands!
Protect the power supply against water and mois-
ture!
Do not unplug the recharger by pulling the cable!
Do not use the power supply when the voltage
requirements of the recharger and the supply do
not match!
