It is important that you fully charge ICON before you use it for the first time. Here are the steps on how to charge ICON:
Remove rear adapter, insert the supplied micro USB cable and connect to a charging source such as a laptop or a phone charger.
An amber light indicates that the light is charging. When the light goes out, ICON is fully charged. It is not possible to operate ICON while charging.
The charge time will vary significantly depending on the charge state of the battery. A normal charge will take 3-5 hours although it may take up to 5 hours when charging for the first time. Please also note that a depleted battery will be trickle charged and may take a lot longer.
You can use any USB 2.0 compliant port. Using a higher powered port (such as an iPhone or iPad charger) is perfectly safe, however it will not result in faster charging.