I just had a thought: EP batteries are all superconductors with very high total power capacity. I don't have an estimate for their total capacity, but the fact that one can power a railgun for 200 shots says pretty high to me.
Now, I was reading about superconductor quenching, and had a wicked idea. The sheer amount of heat that a quenching battery would give off seems like a hell of a lot, so I had a thought: what would the effectiveness be of cracking a battery, heating it to quench temperature and funnelling that heat into something, compared to say, thermite?
You could even have specially designed batteries that have a high resistance when quenched for maximum heat expulsion, and you could figure out a good way to get that heat transferring as best as possible. If you kept the changes discreet, it'd be a good infiltrator's weapon.
What do you think?