LED continues to flash green after many hours

So the Minirig has been charging for a long time and the LED is still flashing green.

1. Your Minirig will be mostly charged so you can go ahead and use it. You do not have to wait for the LED to turn off
2. Due to tolerances and battery cell balancing, sometimes the LED will not turn off, even after a long time on charge. This is normal.
3. You can leave the Minirig on charge overnight and see if the LED turns off by the morning when the balancing completes.
4. You can also try resetting your Minirig.
5. If the LED still does not turn off, do not be concerned as the charging circuit is separate from the LED control and will ensure that the battery is fully charged after around 6-8 hours.