To increase the energy cells of your battery ... visit any Crystal Refinery and deliver them to the Zonai construct there. In return, he will enhance your battery's capacity.

Zonai devices all have unique functions that ... When attached to a shield it basically acts as a Flamethrower and, with enough Energy Cells, turns the shield into an effective offensive weapon.

Zonai devices all have unique functions that ... it basically acts as a Ice projectile weapon and, with enough Energy Cells, turns the shield into an effective offensive weapon.