gdes you’re WRONG!
The Exposure lights use a step-up driver, driving the LEDs in series and I suspect they stack the batteries in parallel.
The 6 pack uses 6 li-ion cells
Let us assume each cell is 2600mAh
This gives a combined cell of 2.7V, 15600mah, EXACTLY AS ADVERTISED
(and this also gives the correct corresponding burn times, allowing a little for heat and driver losses)
I have a 6 Pack and, in fact, it slightly exceeds the quoted run times.
Please either correct me (with fact, not supposition, about one and only one of the many possible LED/driver configurations) or retract your comments about one of too few good UK manufacturers in cycling. And maybe think a little harder before making statements condemning a good company, with excellent customer service, without even having contacted them first.