I got an external mains adapter recently and just wanted to test whether it works or not. Is there inside the Z88's operating system (here: 4.7.1) a place where the attachment of a mains adapter is visible?
Maybe I'm too used to the "battery/mains" icons on modern mobile devices...
No, and that is why one of the first things I did after buying Z88 (in late 1980's) was to add a red LED in the mains adaptor. Too often I would be happily sitting there busily using Z88 thinking the mains was on, but I had forgotten to switch the damn thing on at the wall!