well i have 4 lights on h/b at mo, give em a proper try next week, when probably 3 will go back in the drawer. but instead of spending yet more money on so called cycle lights,
i think i will go back to last years solution, which was a 5 'D' CELL maglite running on 6 'C' cell rechargables.
will do the tests again this time, but from what i remember could get about 6 x 1 hour rides over a couple of weeks on each charge. and most importantly i can see where i'm going along the country lanes.