Ah its a video or GIF i didn’t notice. Realistically maybe around 3300-4000 lumens max depending on the battery used and also depending on the binning and tint of the XHP50.2. Using a 26650 or 21700 will help give good results for a short period.
I can’t seem to get more than 3400 lumens from a 18650 cell using a XHP50.2
I noticed that one reviewer posted a discount code for 25% off - but this deal would save me another £4. Since I’m rather cash-strapped right now I’m happy about every penny that I can save.