Do the EP+ devices lose any information without auxiliary power?

The most of information are stored in non-volatile flash memory, so they are not lost even when the device looses the auxiliary power. These information are for example: configuration file, parameter file, events and disturbance records.

The real time clock is powered from a capacitor which can hold enough voltage level up to one week. If the device does not get auxiliary power more than one week long, the time must be set after switching on the device.