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hasan_alderazi
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December 22nd, 2018 10:00
XPS 15-9560, charging using USB Type-C
Hello, i have a xps 15 9560. I have ran into a lot of issues regarding charging the laptop lately, I have bought two AC adaptor chargers and changed the charging port on the motherboard in the past 6 months. Is there any dell charger that utilizes the usb-c and could it run the laptop at full power ?
hasan_alderazi
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9 Posts
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Posted December 22nd, 2018 11:00
Wd15 180W it isThe XPS 15 9750 will charge from a 12W adapter on the USBC port, I left it at 71% overnight plugged into an iPad adapter and it was 100% in the morning. Obviously no good for working with but useful in an emergency :-)
The BIOS even warned me that the powerout was a little on the low sideVladimirAk
3 Posts
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Posted May 31st, 2019 19:00
It works in a practical manner with chargers of 40-60 W just fine, it won't allow you to game and charge at the same time-> 60W adopter causes battery to discharge while gaming. However it will do slow charge while browsing.
@mdbridges wrote:
The XPS 15 9750 will charge from a 12W adapter on the USBC port, I left it at 71% overnight plugged into an iPad adapter and it was 100% in the morning. Obviously no good for working with but useful in an emergency :-)
The BIOS even warned me that the powerout was a little on the low side
@mdbridges good info, thanks! I don’t remember that being the case with earlier XPS 15 models with USB-C ports. Also, I believe you meant to say 9570 rather than 9750?
JBoman32768
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Posted July 5th, 2019 02:00
I just purchased a Cygnett USB-C 27,000 mAh battery powerbank that does 60W USB-C PD (20v x 3A)
It charges my XPS 15 just fine. Still a warning that it really prefers 130W - but seems to behave as expected.
Cheers,
J.
Interesting, hadn’t heard of that product (or even that company), but the specs and price do seem appealing. It’s a bit like Dell’s PW7018LC except it includes more capacity, an additional USB-C port, and 5W less output from the laptop port, although I doubt that last point matters too much. Nice find!
JBoman32768
2 Posts
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Posted July 5th, 2019 23:00
The PW7018LC is likely to work with XPS 15, but the XPS 9560 (from the OP request) is absent from the compatibility section. Its also bit expensive but a good premium solution that also doubles as a USB hub. Cheers, J.
@JBoman32768 wrote:
The PW7018LC is likely to work with XPS 15, but the XPS 9560 (from the OP request) is absent from the compatibility section. Its also bit expensive but a good premium solution that also doubles as a USB hub. Cheers, J.
@JBoman32768 there are many cases of Dell not continuing to update an accessory's Compatibility list as new products arrive. It doesn't necessary mean that the accessory isn't compatible with the next generation of that product. The XPS 15 9560 didn't change anything power-related compared to the XPS 15 9550, in fact even the newer 9570 and 7590 aren't any different. They're all designed for 130W power sources and can receive power over both the Dell AC adapter barrel connector and USB-C. So although I haven't tested that combination personally, unless Dell went out of their way to remove support for the PW7018LC on newer generations of the XPS 15, I don't see why it wouldn't work.
I'm running Ubuntu on mine, and the Linux kernel shows useful info -
below is the result of plugging it into a 29W Apple power supply, showing that even if it doesn't charge the battery, the laptop does use the power.charge_now 4442000 voltage_min_design 7600000 voltage_now 7576000
charge_now 4442000 voltage_min_design 7600000 voltage_now 7570000
charge_now 4441000 voltage_min_design 7600000 voltage_now 7577000
charge_now 4441000 voltage_min_design 7600000 voltage_now 7567000
charge_now 4440000 voltage_min_design 7600000 voltage_now 7575000
charge_now 4440000 voltage_min_design 7600000 voltage_now 7576000At this point I plugged in the USB-C power supply
charge_now 4439000 voltage_min_design 7600000 voltage_now 7619000
charge_now 4439000 voltage_min_design 7600000 voltage_now 7635000
charge_now 4438000 voltage_min_design 7600000 voltage_now 7634000
charge_now 4438000 voltage_min_design 7600000 voltage_now 7646000
charge_now 4438000 voltage_min_design 7600000 voltage_now 7646000
charge_now 4437000 voltage_min_design 7600000 voltage_now 7644000
charge_now 4437000 voltage_min_design 7600000 voltage_now 7646000
charge_now 4437000 voltage_min_design 7600000 voltage_now 7631000
You can see the voltage increases, and the discharging happens around 30% slower.
So it does use the power, even if it is not enough to charge the battery.
jphughan
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Posted December 22nd, 2018 21:00
The only USB-C power sources that work properly are docks, specifically the WD15 with a 180W adapter and the TB16 with a 240W adapter. The reason is that the XPS 15 requires a 130W power source for full functionality, which is more than the official 100W max of the USB Power Delivery spec, so Dell is doing something proprietary to send 130W. But I haven’t even seen USB-C chargers that offer 100W. The most I’ve ever seen is 87W from the MacBook Pro charger and Lifepowr A3. Other than that, Dell actually does make a 130W USB-C charger intended for the XPS 15 9575, but someone confirmed that it unfortunately and surprisingly does NOT work at full power with older XPS 15 models. There’s another thread about that around here.
The XPS 15 will work with as low as a 60W USB-C power source, but it will charge more slowly and possibly throttle performance in that situation, so it’s better to use undersized power sources like that only for charging while the system is off or asleep. Lower wattage sources don’t work at all.