That's a good way to put it, yes. [It's right along the lines of what he was getting at. He pauses at one wall and activates his right arm's weapon mode. Blue light rolls over his hand and up his robotic arm. He holds it up to see a little better.]

One power source might last a lot longer while the other is burnable for emergencies or...in some cases a weapon. [He pauses, realizing he might have implied something and waves his left hand.]

...that's not the case with my arm. [Not anymore.]