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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...
After purchasing a round-to-USB-C adapter, I used the USB-C charger that came with my XPS 9520 to charge the older PW7015L power adapter.