Salvo wrote:
Specifications should be accurate. Car manufacturers can't get away with advertising fuel efficiency of 50 mpg and not mentioning speed is only 20 mph.
They can, in commercials, when they say "up to 50 mpg" and don't mention that this is on highway :)
In car specs - neither in concise list nor in a user's manual - there wouldn't be graphs showing the mileage VS different speeds, loads, and terrain. In a decent controller manual you will have the graphs.
Salvo wrote:
Ammeter Accuracy: 1.0% at full scale (100a)
Ammeter Resolution: 0.1 amp
If the display reads 12.5A, what error do we have?
Hard to tell. Note that it doesn't say "1A". It says 1.0% at 100A. Which is how my multimeter specs are written too, - average accuracy in % at the given
range. The accuracy of the actual signal may vary across the scale (it is averaged in specs), and at 12.5A it can be more than 1% of or less, but probably not 22%.