Trout, I know you called it the bastid as a term of endearment. I have read the thread. I never suggested you were slagging it off; not sure why you think I did suggest that having re-read my posts?
I was just saying that everyone persisting calling it a bastard is stupid – in the same way as calling any convertible car a hairdressers car is stupid.
Anyway as you say, it's not up to the quality standards of a 600 quid light, but then it only costs 50 quid. You're right about the battery – I've wrapped mine in cling film and then gaffer tape, it's survived snow and all sorts.
As for it mis-claiming it's 900lmns, then I should think most lights do this – manufacturers go for the big number – take the max possible output for a given LED bin and say that's what the light produces. In most cases I doubt this is true, you've got reflector losses, and the beam pattern will make much more difference than a small nominal increase in the number of lumens. You'd be better off testing lights targeted at a standardised target and quoting in lux. Although then manufacturers would then just change lights to beat the test…