Firstly mate, let me just point out that lamping pheasants is illegal, as is illuminating any bird in a tree at night to shoot it, why bother with a big lamp and huge battery to lug around, why not buy a t20 torch from the likes of Cushty mush on here, for around 35 quid with rechargeable 18650 batteries, it will shine 5 times or more, further than you can use an air rifle, it is small, you can gety different coloured led's for it, and a good battery will last a whole nights lamping, it sits on top of your scope, and when you are done, 2 seconds and it off, just to let you know how good they a