The SatStation SolarPak 18 Foldable panel gives you ultimate power in a small compact design. This panel is an economical solution to keep batteries charged. At least a 12 watt panel is needed to give you equipment the proper power and this panel gives you 18 watts of power. You can use this 18 Watts foldable panel to be prepared for an emergency and use it as a back up to charge your satellite phone. This SatStation solar panels come with female cigarette lighter adapter to make sure you can charge any satellite phone such as Iridium GO! 9560 Wifi Device, Extreme 9575, Iridium 9555, Iridium 9505A / 9505, Irdium 9500, IsatPhone Pro and Isatphone 2 satellite phones.