It's pretty evenly split. Searching back for answers on my stuff has yielded a frustrating time looking for Industrial Craft-specific stuff. If you can fill the OP with a ton of resources for making cool stuff then go for it, but don't make a thread simply saying "There was a lot of this over there, so now it's over here."
Eugh, this complicates my plans for a simple generator. I simply want a sustainable one to keep on my main battery banks when I move my stuff from a primitive cave to a new production platform. I won't be running my autominers all the time and when I am I'll be utilizing geothermal buckets to keep them active. Solar would make probably an easier project as people already have a ton of plans for these systems, but it takes so many resources and EU generation per vertical column is not something I'm too concerned about.
And bat packs, I seem to have troubles with one. I crafted a charged one, right-clicked it and put it on. Automined the hell out of a cave before running out of sticks and returning. I noticed the bat pack had like an eighth of a bar left so I put it in my last MFE in the stack which was always maxed. It didn't charge, and having the MFE before it charged completely didn't help, so I figured I needed to completely empty it before it can be recharged. I right-click it to equip again and don my drill. One short mining trip later my drill was uncharged and the bat pack was not being used.
There is probably something I'm doing wrong, but I'm kinda apprehensive of making another one if this problem arises again.