How can I translate into German this term:
Context: Data retention in device (backup battery)
Datenpufferung, Datenhaltung or may be Vorratsdatenspeicherung?
The expression I'd use for data being saved on a battery buffered memory on an external device would be:
I think the most "common" term would be
However, it might very well be that it isn't the best choice in the very context you suggested (back up battery).