Originally Posted by
RubeRad
I tested my 50 turning it off before and after charging (I had used it daily for like 3 weeks on flash, morning and evening, ~30-45min each way). It behaved the same freshly-charged as before; it's on, you hold the power button down, and after 1s it gives a short flash and turns off. Maybe the 50 doesn't have a charge-indication feature?
The short flash when holding the button means that it turned off. If the battery is low, it will make that short flash to turn off, then make a dim flicker for 1-2 seconds.