OK, I have a Hall-effect clamp-on 200A ammeter with a a six-foot cord which enables me to read amps while driving. Put the clamp on one of the wires going from the battery pack to the controller, and took our iMiEV for a drive.
Here are the ammeter readings correlating to the Power Gauge markings:
(usual disclaimer as I'm using an uncalibrated instrument - but it's close)
Power ON, needle midway between blue and green: 0.0A
(this is an update as I had previously said 0.3A - that was simple instrument offset error)
First Tick Mark 45A
Second Tick Mark 95A
Max Tick Mark 154A
(when briefly floored at about 60mph); otherwise I was getting 152.6A at lower speeds.
Regeneration (blue zone):
Seems to be linear, with max tick mark reading ~50A
Regen continues on up
despite the needle being pegged, with a maximum reading seen of 104A
when letting off the go pedal in "B" at around 65mph. I didn't try also applying the brakes to see if it would further increase.
This is really good news
, as it means that our iMiEV indeed has quite powerful regeneration.
Dang, liking this car even more as time goes on...
Update 4/18/12: corrected "zero" reading