Would it not be a much better test to measure power draw for say 10 min with the seconds on and then off, for 10 cycles or so? Rather than waiting for the batte

Would it not be a much better test to measure power draw for say 10 min with the seconds on and then off, for 10 cycles or so? Rather than waiting for the battery to run down. I guess it's more difficult for a laptop as your have to measure in between battery and laptop, but it should be easy for a desktop (maybe one with laptop CPU).