powerbank

English

power +‎ bank

powerbank (plural powerbanks)

portable device used to charge mobile phones and tablet computers

Arabic: please add this translation if you can
Bulgarian: външна батерия f (vǎnšna baterija), преносима батерия f (prenosima baterija)
Chinese:
Cantonese: 奶媽／奶妈 (naai⁵ maa¹), 尿袋 (niu⁶ doi^6-2), 隨叉／随叉 (ceoi⁴ caa¹)

Mandarin: 充電寶／充电宝 (zh) (chōngdiànbǎo), 行動充／行动充, 行動電源／行动电源 (zh) (xíngdòng diànyuán)
Czech: powerbanka (cs) f
Danish: powerbank c
Faroese: orkubanki m
Finnish: varavirtalähde, matka-akku, virtapankki
French: batterie externe f
Georgian: გარე კვების ბლოკი (gare ḳvebis bloḳi), გარე აკუმულატორი (gare aḳumulaṭori), გარე დამმუხტავი (gare dammuxṭavi), გარე დამტენი (gare damṭeni)
German: Powerbank (de) f, mobile Zusatzbatterie f
Greek: αποθήκη ενέργειας f (apothíki enérgeias)
Hindi: please add this translation if you can
Hungarian: hordozható töltő, külső akkumulátor, külső akku, vésztöltő
Japanese: モバイルバッテリー (mobairu batterī)
Korean: 보조배터리 (bojobaeteori)
Polish: bank energii m, powerbank m
Portuguese: please add this translation if you can
Russian: please add this translation if you can
Spanish: cargador portátil m, batería externa f, batería portable f
Swedish: powerbank (sv) c
Turkish: powerbank
Ukrainian: please add this translation if you can
Vietnamese: pin sạc dự phòng

Unadapted borrowing from English powerbank.

powerbank m inan

Declension of powerbank