"02 Eneloop AA chrg" instead is 18 chars and would fit in a line." Eneloop AA charging" consists of 24chars.
As you wrote: because the main settings are displayed, it's easier for the informed user to select the correct program.
But still I'd prefer even short program names to post-its . Users will find naming styles that fit their individiual needs. Only entering the names will be a rather tedious task without proper keyboard.