hahaha he can always use his electric powers even when he's not the raitei and he's outside the infinity fortress, so they must be his own.
and what you say that in the infinity fortress he could always be in a stage between "nomal" ginji and the raitei i think it's quite possible. That would explain his spiky hair. And, moreover, maybe i'm just saying nonsense, but if he had always been in the raitei mode, wouldn't he had swallowed up all the electricity in the infinity fortress??
I hope they explain that better in the last volume!
now that i have more than 15 posts, i can start reading it!!