I have been using this for travel. No oriblem with airlines as long as you take it in your carry on...I had an "oops" in checked luggage in Chaing Rai, but they were nice about it.
Portable Charger Power Bank 25800mAh,Ultra-High Capacity PD3.0...
This site is run by Ivar at in Santiago de Compostela.
This site participates in the Amazon Affiliate program, designed to provide a means for Ivar to earn fees by linking to Amazon