We have two types of external battery chargers, for both of them, you will need to take your battery out of your phone and place it into the charger.
If your charger is part of a desktop dock the light will go from red to green when it is fully charged.
If your charger is a separate battery charger and is not connected to a desktop dock than the light will turn from pink/red/purple to blue when it is finished charging.
Our battery chargers charge your battery slower than a cable or dock. This helps protect your battery which allows them to last much longer. The time it takes for a battery to charge in one of our battery chargers is normally 6-8 hours.