Maybe it's the 'power factor' they are worried about?
/sarc and inside EE joke ...
My guess would be if they thought to bring their chargers, they probably brought their laptops, TV’s, hair dryers and every other convenience they usually plug in.
Bottom line: I seriously doubt these people are in Auschwitz. Cranky and inconvenienced, yeah. Hardly death camps.
If y’all think these people are being held against their will by fascist SS camp guards for forced labor, re-education, medical experiments or any other kook purpose . . . go take a walk and catch your breath.