These look pretty sweet and compact for remote power
Power2Go
The Philips Power2Go range offers up to 60 hours of back-up power from a single charge, allowing portable electronic devices to be powered-up from anywhere in the world without the need of a power outlet. Ranging from a top-of-the line rechargeable power pack, to an emergency phone charger, the Power2Go range provides an outstanding back-up energy source for all your portable electronic devices.
Top-of- the-line in the Philips Power2Go range, is the SCE7640. This is the most sophisticated Power2Go solution, providing back up energy for applications up to 20V. It is even compatible with lap tops and complete with a LED indicator.
http://www.ifa.philips.com/press-releases/29.html