When your battery flashes its beautiful lights its the circuits way to tell you that it got some kind of issue.
First check the following steps:
- Usually its just not activated, press 5 times on the button to activate it.
- If it still flashes it could be drained of power, charge it again and see if that will do the trick.
- You might have used it too long, all batteries have a security cut of after a pre set amount of seconds.
If none of above tip will do the trick, I’m afraid your battery’s next stop is the battery recycling box.