I've just brought a cateye stadium off ebay. I'm slightly disapointed with it. The low battery indicator comes on about 2 minutes after switching the light on; and the light noticably dims after about 2 hours use. (at which point I turned it off). Cateye claim a run time of 3 hours. Is my battery on the way out? While on the light kept changing colour and flickering. At one point (when I hit a pot hole) it even turned it's self off. Is this normal? I'm not sure I've got the confidence to use this light for commuting.