USB C Charging

Question

Dell site reads this: 'Supports Power Delivery that enables two-way power supply between devices.'  Does that mean my Inspiron 7579 will charge its battery using a USB C 90 Watt charger or does it mean the USB C port will only charge another device, not accept charging?

ejbpesca · Answer

Thank you for the explanation.  This topic is a controversy.  Dell sells a USB C 90 watt charger then tells me my Inspiron 7579 does not accept USB C charging although a user guide says two way USB C.  Off brand 90 watt USB C chargers claim to work on Inspiron 7000 series.  An article by Dell says USB C will not accept a charge on the Inspiron laptops but that may be for older ones.  This one is 2017.  I guess I just need to order one and see if it works.

jphughan · Answer

@ejbpesca  Dell's specs aren't perfect -- I've reported errors in some specs that have resulted in corrections to documentation -- but I would rely on them much more heavily than answers from Dell sales and support reps.  I've helped people here who were given information that was egregiously and hilariously false, like the XPS 13 is a high-end system and therefore can only run external displays through a docking station rather than through a basic cable/adapter, or that a system can only run a 4K external display if it has a 4K built-in display.  But I also wouldn't necessarily rely on what you're seeing reported for the 7000 Series in general.  That encompasses several models made over several generations, so information for one system may not be relevant to another.  And in some cases even the power setup of a given system model will vary based on the hardware you spec it with.  This is especially likely to occur if you're looking at reports from Inspiron systems that are or at least can be sized for a 130W power source.  Dell has some systems that accept 130W over USB-C by running a proprietary USB PD mode, but not ALL of their systems that use 130W support this.

USB C Charging

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