This symbol shows the current status of the battery.
The indicator changes to

when connected to an external power supply. When charging is completed, the spark disappears.
An overload in any of the measurement channels is indicated with a red triangle. Channel one
is the left triangle, channel two is the right triangle. If the overload appears during a measurement,
the triangle indicator will turn yellow to show that there has been an overload condition during the global time.
The symbol is empty in idle mode. A running measurement is indicated with a

. A stopped measurement is indicated with

. When a measurement is saved,

shows up. A previously saved measurement has a

to show that it cannot be altered.
The global recording time is displayed both during the measurements and while looking at saved measurements. In idle mode, the clock is shown.