Noun
powerbank (plural powerbanks)
A portable device used to charge mobile phones and tablet computers.
The all-in-one unit includes a faucet, pump, filter, powerbank, and solar panels. Source: Internet
Some of the best powerbanks available during the Prime Day sale are – Ambrane 10000mAh Li-Polymer Powerbank, Ambrane 15000mAh Li-Polymer Powerbank with Type C, Ambrane 15000mAh Li-Polymer Powerbank, Ambrane 10000mAh Li-Polymer Powerbank, among others. Source: Internet
It looks identical to the Bolt Wireless powerbank by Halo -- a sister company of Mophie -- which is already available and has been for some time. Source: Internet