Friend of mine had a 6 cell Maglite - had landing light failure at night at a big airport and used torch by wedging it down side of coaming when ATC asked him to switch landing light on ... sod all use as it pointed at the worng angle but at least it was one more light to alert.
ATC, apprised of the situ, said it was 'at least' as bright as a normal SEP landing light.
It's a good story anyway
An ex copper friend of mine also had a four cell - when I asked him why he needed so much power, he replied whimsically "do you know the difference between a magician's wand and a policeman's maglite?" - no said I - "well, the former is used for cunning stunts."
Sorry Pilot 16, this doesn't help you much, but some good advice seems to have been given earlier
