WD 15 dock not charging Lenovo laptops

Hi, 

In theory the WD15 dock is compatible with non Dell devices, however it may not be powerful enough to charge them, as per the specification here - http://www.dell.com/en-uk/shop/dell-dock-wd15-with-180w-adapter/apd/452-bcdb/pc-accessories#polaris-pd

"Featuring a powerful DisplayPort over USB Type-C cable, with the Dell Dock you can quickly connect your laptop or tablet to a single data and power source up to 130W for Dell devices and 60W for non-Dell devices."

Do the Ideapad 720s and Thinkpad T470s require an output greater than 60w to charge?
What wattage is the ac adaptor connected to the WD15?
Have they ever charged when connected to the WD15?
Do they otherwise function fine on the dock apart from charging?

Alan

I am not the original poster but I can express a similar story and add details. I have a WD15 with 180W adapter for use with a work computer (Dell Precision). It charges that computer fine. I also have a Lenovo 720s that I frequently attach to the same dock. The Lenovo will slowly discharge although Windows 10 reports that it is plugged in (all other dock functionality works perfectly).

The Lenovo has substantially lower power requirements than the Dell Precision, and when used with a different Dell USB-C charger (a 45 watt model) it charges very quickly. However, when attached to the Dell WD15 it doesn't charge. For some reason the power delivery level is not being properly negotiated between the two units.

I get that the WD15 is not guaranteed to work with third-party computers and there's probably nothing Dell can do to solve the problem, but it is nonetheless frustrating. Considering the issues I went through with the TB15 previously, Dell does not seem to have a great reputation for reliable TB3/USB-C docks. 

I have a similar issue. Just bought a Lenovo Thinkbook 13s and want to connect it to the dell dock WD15 with 180w power supply. The Thinkbook tells me it has found a usb sound device, Display Port and HDMI is working, as well as the USB ports. HOWEVER, the power supply does not work. It all works well on a DELL Latitude, so I guess the dock is working properly. What can I do?? Any ideas how I can update the firmware without having a dell laptop??

I wanted to buy this dock to use with my work laptop, from what I see it will not charge it probably, but my main concern is with its hdmi/DP output. my lenovo notebook only outputs at 4k@30hz when using its embedded HDMI port; its manual states that it should be able to output 4k@60hz when using its Thunderbolt3/usb-c port. but I bought a Dell DA300 and while it did output 4k@60hz from my macbook pro, it did not from my lenovo thinkpad x1 (Yoga) 3rd Gen.

I thank any of you that can help me with that. Its for quarantined home-office purposes.

I also have a WD15 with a 180W power adapter and have a similar issue with an HP Elitebook 840 G8 which runs on a 45W power adapter. This WD15 was being used with a Latitude 5420 with no issue. One thing I noticed, is that if I put the Elitebook in suspended mode, it does charge it. But as soon as I start the Elitebook, the screens come one, all works, but the Elitebook is not being charged and runs on the battery. A few other colleagues who have the WD19TBS do not have this problem but most of our colleagues are stuck with the WD15 and it's not working as intended, please advice! Thanks

SOLVED: Good news for my specific issue wiht the HP Elitebook. I was able to upgrade the firmware of my WD15/K17 dock station to version 1.09 (from 2021) and now my laptop is properly charging. The LED on the plug does not go on, but the power icon on the taskbar does confirm it is charging. I don't know if it will work with other laptops with this issue, but if they do, please post it here as well!