Re; DC 9700, I had the battery half charged in my drill. I ran the drill until the battery discharged. When I put the battery in my charger, I pressed the red button the red light did not go on. I then pressed the yellow reset button and pressed the red button and the red light went on for around 15 secs. The went off. I pressed the reset button same thing happen again. Did it 4 times and redk light does not stay on