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Dell PW7015L Powerbank Companion for XPS 15 9520 USB-C Laptop
I used to own a Dell XPS 15 9550, which required a barrel for charging, and I had two PW7015L barrel powerbanks that worked well with it. However, when I switched to a Dell XPS 15 9520, which uses US...
The Dell XPS 15 9550, which you previously owned, used a traditional barrel connector for charging, and your two PW7015L power banks were designed to work with this type of connector. However, when you switched to the Dell XPS 15 9520, which has adopted USB-C as its charging standard, your existing power banks are no longer compatible.