Pile

Ok so I was at ohm and bored, then I had this positively electrifying spark of an idea which induced me to snap a pile of batteries 'cos pile is french for battery plus it reminded me of the first nuclear pile built by Fermi from graphite and uranium blocks, but on the negative side it's not the most exciting thing to describe or look at so I ended up with this current of shockingly bad puns ... I'm addicted ok? Resistance is useless, it's not my volt, please put me back in my cell now!
For the OCD's amongst you note how the terminals of (nearly) every battery are alternated ;-)
Reached Explore #173 - i'm shocked ;-)