USB powered devices run off 5 volts but I am not sure what devices would work to convert let's say 10 volts out of a worn battery to 5 volts. It's possible one of these would work:

https://www.amazon.com/Ginsco-Charger-Socket-Outlet-2-1A%EF%BC%884-2A%EF%BC%89/dp/B01N6S2SNM/ref=sr_1_13?crid=1O33DELJRUC2G&dchild=1&keywords=12+volt+usb+adapter&qid=1595393790&sprefix=12+volt+usb+adap%2Caps%2C215&sr=8-13