thank you for the kind words. 
Yes, Olantern can be use while charging. All 3 modes are available.
For the Perun Mini LED, I asked Olight. They were more than willing to share. But I’m still not sure why the marketing department decided not to put that information in the user manual nor the marketing materials. So every time when they have a new release, I made sure to ask them about the LED used… haha…