At normal screen brightness the instrument can
operate for more than three hours from each charge from its high
capacity Li-Ion battery.
The multi-segment battery indicator turns yellow when the remaining time
falls below about 30 mins, and to red when only 10 minutes remain.
The approximate time in hours and minutes is also shown within the
To further conserve battery life, it
can be set to turn off automatically at a fixed time from the last key
press (5 mins to 60 mins). No data is lost at switch-off.