I put the batteries (AA and AAA) now almost everywhere. When the normal battery is always with an alarm clock, a mouse, a weather station, a radio clock, a radio, etc. all, I will replace it by then Eneloops. This I have now a number in use. Only in a single device I could not use (due to the slightly lower voltage than conventional batteries) it.
The delivery was very quick, the batteries come in handy battery boxes of plastic and they have the versions that are specified.