Do we? Because if you're invoking scare quotes, I don't think you have a good grasp on what's actually happening here.
90% is pretty good efficiency at this level of power. One cannot give an exact figure because it depends heavily on environmental factors, primarily temperature. 90% is pretty much exactly what I'd expect to see in the real world under same conditions.
> I don't think you have a good grasp on what’s actually happening here
Then you don’t, unfortunately.
> 90% is pretty good efficiency at this level of power
Too good. That’s what they’re saying.
>One cannot give an exact figure because it depends heavily on environmental factors
Right there. You've restated the problem. "up to 90%" is nothing guaranteed. If the suspension does not lower, you're not getting 90%. If the charger is covered in dirt, you're not getting 90%. If nothing is guaranteed, I'm scared to volunteer.