Talk:Engine Efficiency Module/@comment-33942731-20171212104311

So you can waste one slot to get 15% better power efficiency.

Or you can simply put one storage module in this slot to have enough space to carry 16 additional Powercells, which increase your powerefficiency by 1600%.

Same goes for the prawn - simply take one set of powercells with you to double your effective reach

I am not sure, if this 15% have any use at all.