Problem solved. According to Zebralight it’s defective. They have refund the money and I have ordered a new one. I really hope the new one is okay. Excellent and quick customer support from Zebralight.well, if it makes you feel any better..
F15 cost less, have more capacity and work great in the D3AA and TS10, both of which have LVP ... ;-)
imo the AA Zebras work better on Eneloop than LiIon, with more constant current to the LED, than LiIon.
you could post it to youtube, and then post the link here
Hopefully Zebra will warranty your light.. let us know the end result