Ok, I tried to duplicate my ride on my Orbea Gain (page1 #11) using assistance levels 2 & 3 = medium & high.
I messed up a little cos I took a wrong turn and I finished with a very similar mileage but a little more climbing 1,867 ft vs about 1,600 ft.
Garmin ride details are :-
Distance: 25.65 mi
Time: 1:30:18
Avg Speed: 17.0 mph
Elev Gain: 1,867 ft
Avg HR: 123 bpm
Max HR: 143 bpm
I didn't set out to 'be faster' but I like to work reasonably hard on my rides.
What can I say but Wow ! This bike is brilliant, I'm 72 now 70kg and a pretty good climber but it's some years since I have covered 'undulating' roads at this pace.
I was on level 1 for the 1st mile and then (as requested) on levels 2 & 3 for the remaining 25 miles.
I used level 3 whenever the elevation grade went above approx 6%. There were about 6 instances of this
(see included graphs, courtesy of ebikemotion's app) The two major blocks of level3 use cover climbs of about 2 miles of constant elevation peaking around 13/14%.
I still had 57% of my battery left. This surprised me but I think this can be partly explained because the
higher assist levels allow me to maintain a high average speed up the the climb and then quickly into the
15.5mph (no assist level)
Comparing the rides: Ride 1 (level1 only) 1hr 37:58 avg 15.6 mph Today 1hr 30:18 avg 17 mph.
Here are the graphs, showing Level of assistance and Consumption.
N:B The graphs are showing the same info but the top one shows the spread well and the bottom one the figures.
So no red means over the assist level (no battery drain)
Important to note (hmm difficult to explain this ?) As I understand it, when you are at any assist level and below the 15.5 mph (approx) cut-off point the battery power (torque) supplied by the battery is inversely
proportional to the amount of power you are contributing. e.g if level 2 can provide 60% of the batteries
torque, it is not a 'given' that it does because the more you contribute the less the battery needs to.
As evidenced by the red consumption spikes the torque can fall below or go above the level2 median.
This is the beauty of 'Pedal Assistance' on these bikes where the available battery range is to a large extent
dependent on the riders input.
Ok, feel free to disagree with me, I do not claim to be an expert. Hopefully this may help someone but hey !
if not it has kept me out of the wife's way for an hour.