Sennheiser 500 Series - Manual (Page 9)

Product overview
7
ቭ
Transmitter battery
status Charge status:
When the battery charge status is critical, “ LOW BATT ”
additionally appears on the display panel.
ቮ
Lock mode icon Lock mode is activated
Display Meaning
approx. 100%
approx. 70%
approx. 30%
Battery icon is flashing; charge status is critical