In the desert, on safari, up a mountain or simply on the move, the Solargorilla solar charger gives your Powergorilla juice anywhere under the sun. Solargorilla portable charger is also a viable charging option for laptops under 40 watts and it can even charge your mobile phone, iPod, handheld games consoles and many more devices from the 5V USB output. Solargorilla portable charger works via two PV (photovoltaic) solar panels, which generate electric current when they are exposed to sunlight. The solar panels are made of glass which greatly improves the performance of the Solargorilla solar charger as well as making the aesthetics of the unit better. The green LED on the Solargorilla portable charger indicates the strength of charge - the more UV intensity - the better it will work! The technically advanced solar panels ensure superb power and reliable performance, all housed in a tough outer casing. Note: Solargorilla is a charging option. It is primarily designed to be used in conjunction with the Powergorilla and may not work with some laptops over 40 watts directly. It relies on the UV intensity of the sun. Therefore, at certain times of the year it may not be suitable for use in the Northern Hemisphere unless combined with the Powergorilla. The Solargorilla solar charger has been trialed successfully in the Southern Hemisphere by aid agencies, emergency services, the military and adventure travellers, where power is a crucial element of their communications strategy. To use with Macbook, Macbook Air and Macbook Pro you will need an Apple MagSafe airline adaptor or our alternate connection solution and one of our universal car charger sockets. The MagSafe adaptor is available to buy from us. Please note: the MagSafe cable is only suitable for Apple Macs incorporating the MagSafe style of connector. You may require the L77D tip for the older Mac laptops (such as powerbook).