So we have weapon, shield, engine, and auxiliary power levels, as well as corresponding battery items we can use to boost each. I know what the first three do, but I have no idea when or why I'd want to boost auxiliary power. I've been looking for a description for this, but haven't found anything yet. Who can explain this for me?
It's not only your turn rate that it affects, although for the Miranda is about as much as most people need to know. After that, it affects many abilities, specially Science ship/officers abilities like tractor beam, cloaking, detecting cloak, tachyon beams, scramble sensors, etc.
being mostly a tactical captain, i keep my aux power pretty low, around 35, but with the skills and such it ends up more like 47 / 35. i pop a battery before using things like the tach beam, it moves the shield drain from ~35 per 'pulse' ( i still don't know how many pulses i get) to about 95 per pusle for those 3 or 4 valuble seconds.