The Iridium Extreme handset will accept a charge via the USB port using a mini-USB cable. The phone was designed to accept a standard USB charge via many of the portable battery accessories that are available on the market to extend use in remote areas.
IMPORTANT! Please note that a charging adapter is required to charge the Extreme phone with either the standard charger or a USB cable. The adapter is supplied as a standard accessory with the phone or can be purchased separately.