Battery Power Curve from Logs

Has someone plotted the power curves of their batteries from Pixhawk logs? I would like to do this for the last few months of flying to see how the curve changes. Most of these graphs that are made are using a constant power draw. Since in flight power is constantly changing I would need to use the throttle to normalize the voltage, but I’m not sure how exactly to do that. Any tips?

I haven’t: great idea though. Using MavExplorer it should be trivial to add a new graph, to display (voltage x current) vs time. It may already be in the xml, but if it isn’t it would be a nice addition, so PR it!