Why Does My Dewalt Charger Blinking Fast. When a Dewalt charger shows a blinking red light it means that it is in charging mode. Why is my Dewalt Charger blinking fast.

I can put the battery on it and it blinks as if it is charging but it doesnt actually do anything. Click to read more on it. After just a few traces it says.
You are not to unplug the charger until it reaches its maximum battery capacity or until the blinking red light turns to green.
Itll stay like that all night and sometimes after the first hour itll do the fast blink indicating a bad battery or other fault. I know this is a super old question but somebodys going to come in here and want the answer. When the battery cools off or warms up it. Some chargers blink slow about once per second to indicate a good charging current and blink faster about twice per second to indicate a battery problem.
