You need to build a charger from ae2 and power it then place certus quartz in n wait a few seconds.
Don't forget it can be powered via the wooden crank as well
the quest gives you fluix seeds but up until that quest, you don't have any way of getting any fluix, and fluix crystals (pure or not pure) are required to make the charger.
Chicken and the egg tho. I don't see how you're supposed to continue down that road till you obtain fluix somehow.
EDIT: Ok, so you can make charged certus quartz ore itself from the certus essence. Ok, that's the part I missed.
some other points: Since dmaster made a whole different iron gear, all the rest of the gears from thermal foundation are craftable but won't show up in NEI. In addition there are times while reading the quest lines that I think I'm playing a different map (... since spiders don't spawn, since animals don't spawn, when obviously they do).
Can't help feeling that a lot of this pack was rushed to meet the jampacked deadline... I'm trodding through it for the sake of completionism I guess.
There's one room that hasn't open (tho that room has barely anything in it to begin with) and I really don't see what could open it at this point. I have all but 2 of the questlines completed. seeds and storing are only ones I've still got left to complete
edit: found how to make the charged....