@Lazar-Demin For myself, I am running a power dock in stationary mode with no battery connected, however the LED is flashing low battery warning (not erratically). I have tried a 2A wall wart with the same results. The power dock and Omega, all LED's turn off.

@Julien-D Same issue here, wrote a program that times it for me at 50 minutes every time. Powering from a PC usb or a 5V 550mA power supply. However I was just reading modes of the power dock and when my unit is plugged into a PC USB port with no battery attached, the low battery warning LED is flashing instead of stationary mode where the LEDs should be flashing erratically.