It always bugged me that when you break storage blocks (Batbox, MFE, MFSU) any stored energy just *Poof* Disappears.
My suggestion, make storage blocks maintain there energy level, when you break a storage block that has power still in it, it should drop a block with a damage value similar to the way that battery's store there energy.
I'm not sure if this is possible without base file modification but some input would be nice.
As a second thought, would this be too over powered? would this unbalance and Nerf battery's too much?