Can I charge a 19V laptop from multiple USB ports?

My laptop’s charger is rated at 19V 2.1A. I was wondering if it would be possible to build an adapter which would allow me to charge it from a power bank, even if just slowly or via multiple USB ports.

I know you can buy adapters which utilise USB power delivery, but most outlets and powerbanks don’t have PD yet.

@askelectronics #AskFedi #Electronics #DIY #USB

  • AItoothbrushEnglish
    2·
    2 months ago

    If your powerbank has full power delivery support(it probably doesnt) then you can request voltages in 1/10v increments. This is very cool but you need a chip that communicates in your cable.

    • madnificent@lemmy.worldEnglish
      1·
      2 months ago

      I totally forgot about that :P That would be great indeed.

      The PD trigger board may be much more involved/expensive though and I have not seen any budget battery banks supporting it. One can dream.

      I expect consuming devices to adapt themselves to the three or four commonly provided voltages for the foreseeable future.