Is my power bank allowed on the airplane?

The IATA has established rules for flying with power banks. You can take up to 2 power banks with you of 100Wh maximum each. Put them in your carry-on luggage, because they're not allowed in checked luggage. Don't charge your power bank during the flight and don't use it to charge another device. Don't put your power banks at the bottom of your bag, but somewhere you can easily access them. At the security check, you often have to show your power bank.

Do you have a larger power bank? It then depends on the capacity. Up to 27,000mAh (100Wh), you can take it with you without permission. Between 27,000 and 43,000mAh (100 to 160Wh), it's allowed sometimes, but only with permission from your airline. Power banks above 43,000mAh (160Wh), like a 45,000mAh model, are never allowed. Always check the rules of your airline before you leave, because they can have extra rules or check more strictly.

If you're looking for information about power banks in an airplane, you often encounter the term Wh. This is the international unit for the capacity of batteries. The capacity of your power bank is usually listed in mAh. You can easily convert mAh to Wh by multiplying the capacity in mAh with 3.7 and then dividing it by 1000. A 20,000mAh power bank has a capacity of (20,000x3.7)/1000=74Wh.