ペーパー電池 でしょう
pēpādenchideshō
1. Paper battery, likely.
Noun
1. Paper battery, likely.
1. paper
1. toilet paper; lavatory paper
1. dry cell battery
1. tissue paper; tissue
1. solar cell
1. battery; cell
1. running out of battery; battery depletion
2. loss of energy; depletion of stamina
1. it seems; I think
2. right?; don't you agree?
1. If it's paper; If it were paper