Thanks for this Wazza! Picked one up today partly on your recommendation, and first impressions are extremely positive. Brought it home and blew up my new T38 straight away - had it up in less than 15 minutes (this will be less when I know what I am doing), charge went from 93% to 70%, so I'd say comfortably 3 fills there (4 at a pinch), although of course I'd charge it between trips anyway. Seems very fast on the low pressure cycle, and pretty quiet too (just a bit of whistling). High pressure cycle kicks in just under 1 psi, and has the noise I am used to with other pumps I have used. It is so light with the lion battery, fairly compact, and some really nice touches with the carry case, torch and dual USB outlets as well. A really useful bit of kit and beats lifting the bonnest etc to run a standard 12v pump. Just hope now that it has the durability and I am still raving about it a year from now!