noun which may take the genitive case particle 'no'
battery-operated; battery-powered
Describes devices that run on batteries, often used attributively with の.
This clock is battery-operated.
電池式のラジオを持ってキャンプに行った。
I took a battery-powered radio on the camping trip.
battery-powered calculator
Compound of 電池 (battery) + 式 (style/type).