Bug 502598

Please see the attached screenshots

I have used the laptop on battery until nearly empty, then put the laptop to ac again.
In my opinion the 'energy consumption' graph does not align with the battery-percentage graph: The battery was being emptied nearly constantly, but the energy-graph shows a linear decrease at the beginning followed by a huge consumption-spike - which definitely was not the case (i was browsing docs/web at the time)
If there had been such a steep increase in energy consumption, this should have an impact on the slope of the battery percentage curve - which is not the case

Moreover, why do we see only a small amount of 'energy consumption' graph in comparison to the battery-percentage (which is much 'wider')

Still, i have some more doubts of energy-consumption accuracy:
The battery charging strategy (upower) is set to charging limits: stop at 85%, start charging below 66%
So, in my case - even if ac is connected - the battery loses energy at a very slow but noticeable rate (until it reaches 66%, where recharging starts again). This is not shown in the graph
(maybe we don't have this kind of history to show in the first place?)

What is your take on this?
Can this be fixed to show 'better' percentage and consumption information?