The basics
The £140 Solargorilla is a solar panel. The £150 Powergorilla is a big battery. Both come with a box of adapters to connect virtually any laptop or gadget (see the Powertraveller site for a compatibility list -- the only serious omission is the MacBook).
You can buy the Gorilla pair separately, but they become really interesting when you have both. On its own, the Solargorilla can only charge your gadgets in the day-time, and the gadget in question has to be close to the solar panel. Which isn't very convenient if the gadget is your phone.
Meanwhile, the Powergorilla alone is just a backup laptop or gadget battery: not very green or innovative. Put the pair together, however, and you have a system capable of storing renewable energy to charge your gadgets any time of day.
Facebook 
iPhone App 
Newsletters 
Twitter 
RSS Feeds 
Send Us Tips 
