All the 3 power banks you can travel on plane in hand luggage.

Can be used for USB Lights were you don't have electricity
NEW MOBILE Power Bank that works with USB
SQUID Mini 4000MAH Power Bank
Battery Type: Grade A Li-ion
Output: 2.1A
Colour: Black,
Product dimensions: 85 x 43 x 23mm
Weight: 125g
Price for one €10 or 3 for €25

2600mAh Mini Square Powerbank with Switch Button.
External Mobile Battery Emergency .
Portable Travel Power Bank Charger for Cell Phone.
With Cable Included
Condition NEW
Price €5

Power Bank for laptop & mobile
Capacity 20000mAh
Digital number countdown
All instructions in Photos
Condition New
Price €28