I get that 1: Power is built up from damage (only shield hits?)
2: Overcharge only affects weapon bay mounts, ie not turrets, and siege mounts, and the boost is even shared across all relevant mounts
3: Does not boost missiles, point defense or fighters.
4: Profit?
What I am not getting is how much the boost is. It has not appeared as a tooltip modifier to me so i don't know if it is a percentage increase at the various ranges, or if its a flat damage increase.
And if the charge is evenly divided between weapons that can fire it, does that mean a single eligible weapon will get an incredible boost?