I bought a Nitecore Tube Flashlight a few weeks back and really liked how well it worked, for how small it was. Then, my son was playing with it one day and it stopped working.
So, figured it just needed charging. Which, I did. The battery appears to be about 33mAh btw. Anyway, after charging, it still didn’t work. I started a return with Amazon, and while playing with it, I decided to hold the power button while plugging into USB. It immediately started working again! Unplugged USB, and it still works.
So, there seems to be some type of state the little IC gets into where it refuses to turn on again. Maybe when the battery dies rather suddenly while in a certain state. Anyway, resetting it isn’t covered in the manual. So this seems to do it.
Good luck for anyone if they have this issue. =)
I recently purchased a Unifi UVC-G3 network camera for the outside of my house. It works great in standalone mode, but has no recording capability without a Unifi NVR. The Ubiquiti hardware one is about $350, but a lot of people just repurpose a small linux box to do the job. That, to me, seemed silly since I have a Mac Mini that serves as my home media server, and runs my weather station (and a few other things). I also have a Raspberry Pi in the garage that runs Cacti (for network monitoring), and the Unifi wireless controller. This all got me thinking, “wait, I could just run the free version of VMWare ESXi (vSphere) and virtualize all of this on the Mac Mini”. The problem was, was that really possible? I know Apple allows virtualization of it’s OS on Apple hardware, and there are hacks to get it to work on non-Apple hardware, but I’d never actually managed a vSphere server before. Sure, I have tons of VMs at work, but the system is managed by another group, and all the VMs are Windows or Linux. So, I had to try. 
For about 5 years now, I have run a Crashplan ProE (at the time, just Crashplan Pro) server at my office. It ran on a server here in town, then a remote server as well (for offsite backup). This server largely stalled out at version 3.6, and has worked quite well, but had limited storage, so we basically only backed up the bare necessities (Documents and Desktop, no pictures, music, videos, etc). Which, while fine, isn’t exactly what Journalism faculty expect when they generate a lot of photos, videos, etc. =/