I started a new thread for a possible driver upgrade/option for the Q8 that would allow for a pretty easy 4S cell conversion and the use of XHP35’s in place of the XP-L’s.
There is the possibility of up to 10k lumens with XHP35’s based on the fact that Acebeam gets 2600 lumens out of an XHP35 HI in lower bins then we can get now in the K70.
If anyone is interested here is the new thread: The Texas Buck driver series, Q8 / Skyray King 2S/4S buck driver RELEASED!
Also got some discussion going on in this thread about a possible Q8 driver with 3 channels and a bank of 7135’s to allow for a regulated low and medium mode, which is honestly all you will need most of the time with a light like this IMHO. Would also net you more lumens and less heat in all but the highest modes as well.