I got this flashlight off of ebay for $1.95 and worked great for a mod. Just got my batteries in from DX and I am charging them now. Fits one AA battery so I got the Trustfire 14500. I used the same switch that Nico used on the new NicoStick and a PCB to attach the 901 att and press fitted into the lens section. Thank you to all the modders for the great ideas!!