What I don’t understand is why you always give data based on max settings. Max makes it fade very short run time, Dyson actually advise on their website under Battery Care to try and not using Max setting. Max causes the battery to warm up, resulting in getting less run time quite quickly for due to battery degradation. Also the V8 filter captured the fine dust from WITHIN, so the outside of the filter as you showed, will look spotlessly clean because we are exposed the the wrong outside part.
likely because not using max results in poor performance. I agree with other comments that he at least run a series of battery duration tests at his recommended max setting. will likely have to find another review for that. this is on prime for $299
