I read your helpful comments about Hills.etc. Went out again and posted in the same thread. You might find how different husbandandwife on the same bikes approached the problem interesting. Sorry not sure how to take you directly there!
Had a 40 mile ride on my Kalkhoff Include yesterday. Started with 80 miles range on “Power” (I ride with this setting all the time) and finished with an indicated 50 mile range left. The ride took me North of Wokingham in Berkshire and into the Chilterns via Henley. I took the Thames path on the way back and then to Warren Row where there is an awesome bike cafe called Velolife (great for cake). I’m still smiling.