I have had my Vision Spinner (Twist 1300) for 4 days and I am having trouble charging it. I leave it on charge all night, I also turn it off before I put it on the charger, Only once has the light been Green the next morning, Can someone tell me what I am doing wrong? When I am using it I use it just below the medium setting and it only lasted 4 hours before the button started flashing. Also when I take it off the charger and put on a tank and use it the button flashes like it does when you put it on the charger. I have to turn it off and on 3 to 4 times before I can use it. Help Please.