Ive had my aspire cf sub omega for a while now. Never had No problems. I was using it and when I went to hit it the light would not turn on which usually turns blue when u go to fire it. But nothing and usually it let's me know when its battery is low by turning orange. I hit it 5 times thinking maybe I turned it off but no. I went to charge it and when I connect it to the Charger it stays green- never changes or blinks. The battery will illuminate that blue orange combination 5 times and than stays orange. Left it like that for a while and took it off and nothing. Pushed the button and no color and won't fire. I really liked this one and durable. Btw I also cleaned The battery and the charger.