Philips Avalon FM20 Instructions For Use Manual page 192

26 Specifications and Standards Compliance
Battery Specifications
Performance Specifications
Battery
192
Operating Time
(with new, fully charged
battery)
Charge Time
Basic monitoring configuration: >2 hours
(Display Brightness: 70%, Recorder: "On" at 3cm/
min,
NBP: Auto Mode at 15min, 2 US Transducers, 1
Toco+ with MECG, 1 Patient Module with DECG)
When monitor is off: approx. 6 hours
When monitor is in use: more than 10 hours
(depending on monitor configuration)