i am still very satisfied with my ac power bank from polaroid for outside use, but:
Someone tried this out?
https://www.thomann.de/gb/myvolts_ripco ... ImVuIn0%3Di am not sure how to use this - regular powerbanks will not fit, right? and ones with up to 20v cost the same like ac power banks, so the advantage of this ripcord capble would be less space with a wall plug with usb power socket, right?
the german review under the product says: it's working only on his/her laptop usb port (strange...) while not with some powerbanks or usb wall power power supplies. (i don't know what kind of laptop this must be...)
[edit:] addionally, myvolts is emphasizing the compatibility, but only for the chord, at the end. no words, which 20.000 powerbank will fit:
https://myvolts.com/questions/index.php ... how=101734