Alright so i piece fell off on the inside after it was knocked off my shelf. When you screw off the cap of the flashlight theres the conductors for the battery and one of them fell off. It did not hinder the performance of the flashlight but i did solder it back on there and it worked fine both hi and low mode. Anyways i worked a 4 hour shift last night and had the light on low mode for probably 2 hours and on high for maybe a half hour. The batterys are probably a month old and all that is working now is the low mode. Is this the result of low batteries or is something screwed up with my flashlight i havent noticed this before but i usually change my batteries at the first sign of dimming.