Why power banks are not allowed on planes?

Related questions

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Tags

1. #circuit
2. #carried
3. #power
4. #cargo
5. #carriage
6. #batteries
7. #airlines
8. #passengers
9. #short
10. #purpose
11. #banks
12. #safety
13. #baggage
14. #protected
15. #actually
16. #considered
17. #carry
18. #spare
19. #allow
20. #individually
21. #luggage