Yes, you can bring ZMI battery packs aboard a plane.
All ZMI battery packs, including the PowerPack 10000 and PowerPack 20000, have capacities below the limit of 100 watt-hours per FAA regulations on rechargeable lithium batteries.
However, please note: When traveling by plane, FAA regulations require you to store your portable charger/battery pack in your carry-on luggage, NOT checked-in luggage.
Additional technical information:
|Product (Model)||Watt-Hours (WH)|
|PowerPack 10000 (Model QB810)||38.5|
|PowerPack 20000 (Model QB820)||72|
As you can see, both battery packs have watt-hours below the FAA limit of 100 watt-hours.