- Not plugged in correctly. Make sure the charger is plugged into a working power outlet and check the connection between the charger and the drill.
- Faulty charger. If you have a multimeter, you can remove the battery and test it to see if the charger is outputting power.
- Battery problem. It's possible that your battery is dead or faulty, which will prevent it from accepting a charge. If the charger displays a flashing or flickering green light when plugged in, it may be defective.
