To defeat the Dreadnought, you'll need an arsenal of energy-cells to fuel your attacks. But don't just any energy-cell will do. No, no. You'll need:
But don't worry, we have them all here:
Cellular-1: The Basic
This is the entry-level energy-cell. It'll get you by, but it's not going to win you any awards. Upgrade to Cellular-2 for some real power.