Question: Charging Energy Crystals

Game: Minecraft v1.7.3 + IC^2 v0.90

Hi,

I've created an Energy Crystal and Need to charge to to make a Lap. Crystal, but when I stick it in a BatBox nothing seems to happen. RE-Batteries charge up no problem, but not the Energy Crystal. Can someone possibly point out what I'm doing wrong?

Cheers,

Hrm, ok.

Foolish follow-up question then: An MFE can be made with UN-Charged energy crystals then? Whereas a Lap. Crystal requires a Charged energy crystal?

Cheers,