I use this multi adapter adapter from Monoprice to connect my Dell monitor, external keyboard, and power cable to my 15" 2016 MacBookPro. Recently, on a few occasions, I noticed that while plugged in to this Multi-Adapter, that my battery is not charging. If I unplug and replug, it seems to start charging again. My question is if the Muti-Adapter is flaky, my USB-3 port is flaky, or other? This happened once when it drained to 0 and my computer wouldn't start up again. I had it repaired by Apple, where they replaced the logic board. Attached is a screen shot of my Activity Monitor when I notice my battery level dropping.