Definition of powerbank in English:
powerbank
nounˈpaʊəbaŋkˈpaʊ(ə)rˌbæŋk
trademark in UK A portable battery-powered device for charging the battery of a mobile phone or other electronic device.
the speaker comes with a powerbank that can charge external devices via USB
Definition of powerbank in US English:
powerbank
nounˈpaʊ(ə)rˌbæŋkˈpou(ə)rˌbaNGk
trademark in UK A portable battery-powered device for charging the battery of a mobile phone or other electronic device.
the speaker comes with a powerbank that can charge external devices via USB