[Thinkpad Tablet General] DoHxBoY:
Sure does, but be warned I can't guarantee that it will work with every OTG cable/Hub, I bought two to test and one of them (Brand: Ugreen) actually caused the tablet to immediately shutdown and would not boot with it plugged in.

That said, the other one I'm successfully using, is a random "Adam" brand, works great but I cannot speak to the longevity of the hub as the metal around the USB-C end to the tablet already fell off..

Also note, this is a learning process and there are a few issues I've had to troubleshoot along the way; hopefully you and others can learn from my process so far.

For starters, the USB-C Hub works great and allows me to run a HiFiMe Sabre 2018 DAC off of the USB 2.0 port and low profile 128GB flash drive from the 3.0 port, which is nice since it allows me to use the DAC for everything and have an easy to remove storage device for all my FLAC files. I'm assuming it will run anything else I plug into its other card readers as well, but I have not tested them.

The first major issue that I ran into is how to get it to charge/charge full speed through the Hub. When using the stock USB-C to USB A cord to the hub for power, you could trick the device into charging by first plugging the power/devices into the hub, and then the hub into the tablet; this uses the hub to power the devices and the tablet to charge full speed. However, you'd then have to unplug the hub from the tablet every time you need to re-trick it.. doesn't work well for a car install. I then noticed if you use a USB-C charger with a USB-C to USB-C cord, tested specifically with normal Cable Creation 10ft USB-C cable and a PowerRocker QC3 wall charger with a 5v 3A USB-C port on it, it will charge at full speed regardless of the order which they are connected or reconnected. Meaning you can keep everything plugged in and when power is restored from the car, it will actually charge.

Being that this initial test was completed with a wall charger, I needed to order a car charger to test it in the car. Since the hub has a Power Delivery port, I thought I would order a PD compatible USB-C car charger and a PD cable... this was a huge failure. The PD cable to the wall charger charged the tablet through the hub, but the PD cable to the PD car charger didn't even register as being "plugged in" to the tablet. However, the original USB-C cable did charge the tablet when used with the PD Car charger. My only conclusion here is that PD will not work with this set up. I am going to order a non-PD USB-C car charger for further testing.

Now that we have a solution for consistent charge rate when the car is turned on/off, without having to reconnect cables, we need to address the issue of the drain the hub places on the tablet when it is not being charged. The tablet drops an easy 6% an hour with the hub plugged in. Once again, we could always disconnect the hub when we leave the car, but that wouldn't be very easy with a fixed installation. Note, I did order a USB-C extender (1ft) to attempt to see if I could dash mount the female end for this purpose, but the hub and DAC are not recognized by the tablet while using this extension cable; so that was a no go.

That said, this is where I am now, and what I am currently beating my head on; hopefully someone can help me make this all come full circle.

My original "dirty fix" for this to use Tasker to shutdown the tablet when the tablet looses charging status/the car is turned off, and then use fastboot OEM off-mode-charge toggle to turn the tablet back on when the car is turned on/charging is returned. I was able to get tasker to work, but so far I am unable to get the fastboot toggle to work.

At first the tablet was allowing me to unplug it from the wall, it would shut down, and then when I plugged it back in it would go into off mode charging since the toggle didn't work. But this evening, now it isn't even doing that. The only time it even goes into off mode charging is if I leave the hub connected to power and plug it back in. I don't know why this is happening now, but no combination of cord/charger is allowing me to unplug it from the wall/charger and have it start charging when plugged back in. The only way around this is to manually turn the tablet back on.. better than having to plug/unplug the hub, but still not something easily done with a fixed installation. At least maybe a button/lever could be configured to make the power button accessible from the dash; maybe a simple piece that when pushed applies opposite pressure to the power button to turn it on.

So, at this point, the only issue I need to solve is how to keep the tablet alive when the car is off, without having to unplug anything. I've had ideas about maybe having tasker lock the tablet on charging end, then somehow disable the USB port on the tablet when it is locked, and enable the usb port when it is unlocked (IE, when you get back in the car and double tap the screen to wake it up), but I do not know if disabling the USB port is even possible. I'm sure there has to be someone with more knowledge than me as this is my first venture this deep into anything android really; would be great if someone could duplicate the functionality of Timur's Kernel for it.

TL;DR: Depending on all of the equipment used, yes it will charge while connected to a "powered "OTG" cable/hub", but that's one very, very small step, and I need someone to help me figure out how to prevent the hub from draining the tablet (via Tasker, Kernel, or Rom modding) when the car is off.