Charge Dell 9550 over USB-C Thunderbolt port

Discussion in 'Dell XPS and Studio XPS' started by Paloseco, May 19, 2017.

  1. Paloseco

    Paloseco Notebook Evangelist

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    Would like to know if it's possible to charge the Dell XPS 9550 over Thunderbolt port.
     
  2. Paloseco

    Paloseco Notebook Evangelist

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    I wonder if I can use QuickCharge 3.0 wall or car chargers with this laptop or the newer model 9560.
     
  3. _sem_

    _sem_ Notebook Evangelist

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    Certainly - USB Power Delivery. WD15/TB16 do even with 130W which is more than USB PD standard (up to 100W). Some (but not all) 3rd-party laptop USB-C chargers and docks do too - compatibility is quite tricky despite the standard. The 9550 is known to accept 60W @ 20V 3A. Phone chargers won't work.

    Nope.
     
  4. custom90gt

    custom90gt Notebook Deity

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    This has been answered a few times, but you need at least 65W to charge the 9550/9560 over thunderbolt. The Google 65W adapter is what I use.
     
  5. _sem_

    _sem_ Notebook Evangelist

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  6. custom90gt

    custom90gt Notebook Deity

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    I guess I should have said the adapter has to supply 19.5V for it to charge.
     
  7. Paloseco

    Paloseco Notebook Evangelist

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    I've contacted today Dell UK using the live sales assistant, but they couldn't specify how to do it. Instead, they recommended me to contact tech support by phone since they don't have live chat.

    Qualcomm QuickCharge 4.0 supports Power Delivery, so in theory the same wall or car charger should be able to charge the smartphone and the laptop.
    Even if the charger provides as low as 36w, I think the computer should charge anyway, but slower. Where days exactly that there's a minimum wattage required?

    https://blog.banggood.com/how-quick-charge-qc-4-0-works-51328.html

    https://www.goandroid.co.in/qualcomm-quick-charge-4-0-coming-mid-year/60291/
     
  8. custom90gt

    custom90gt Notebook Deity

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    It's not just a wattage requirement, it's a voltage requirement. Most cell phone chargers don't put out enough voltage to charge the XPS.

    Check out the PCWORLD link from _sem_ and it shows that only the 20v chargers worked on the XPS 13.

    *on edit* Quick Charge 4.0 is said to offer charging at either 5V (4.7A to 5.6A) or 9V (at 3A) - not going to work.
     
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  9. tijo

    tijo Sacred Blame Super Moderator

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    The XPS power circuit was designed for an input of 19.5 V (there's always some leeway, but not that much and I wouldn't go over 19.5 V) and it will also draw a certain amount of power to charge the battery and more if it is powered on. Don't try a 19.5V 15 W charger either, you're asking for a fire.
     
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  10. Paloseco

    Paloseco Notebook Evangelist

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    They are orienting Quick Charge towards small devices only, thus removing the higher voltages like 20 volts.

    http://m.gsmarena.com/quick_charge_40_may_provide_up_to_28w_of_power_smartly-blog-21560.php
     
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