Engineering Bays!

OMG, I love these things. I made an entire fleet with no maintenance costs =D

In my fleet makeup (not that you guys wouldn't already know this but it was new for me) I made a Large Freighter supply ship with lots of large supply + solar collectors and 2x supply drone modules. Since I was using supply only weapons (incinerator beams + wave motion guns) it seemed to work really well for keeping my other ships topped off but, and heres where I don't know if it was a bug or just my fleet sucking down the supplies - my 2x supply freighters gave out supplies at 2400 per turn combined, they had 2x drone supply modules each, could draw in a little over 2000 supplies via solar collectors each and lastly, had about 100,000 supplies innate. I traveled like 4-5 systems and it looked like my freighters were already half way tapped out. This was going through some of my own systems with supply depots too.

My question is - does the supply drones give out all that supply no matter how much is needed? What I mean is, if my ship only needs say 1300 supply to top it off, would the drones still give it 2400 and the rest is just gone? I ask because it sure seemed like it sucked it down rather fast. This was the first time I'd used those drones to radiate supply to my ships, I had done it manually before that.