When charging, fully charged is solid green and anything below 100% is solid red. While turned on battery above 30% is solid green and 10-30% charged is solid red and below 10% is blinking red.
We have nothing in our manual about blinking green. Please ask the customer to do the following if that is the case:
- Make sure the positive "+" is facing the power button and that there is nothing else in the battery chamber
- Please also ask them to make sure that the cap is screwed on tightly so that the battery can make a good connection.
- If none of these work I am afraid the product may be defective. In that case, you may send the customer a replacement - subject to the warranty.