Re: units again...
What with it being Friday and this being The Register.. we should attempt to convert this into the universal system of Vulture Central Standards.
I cannot find a unit of mass in the standard-defining document (http://www.theregister.co.uk/2007/08/24/vulture_central_standards), so I propose the Vulture Standard grapefruit which already defines volume to be the new mass unit as well, according to yahoo answers it weighs 0.128kg in SI.
That makes the natural choice for a unit of force the weight of a grapefruit on Mars, and the energy unit (Mars-grapefruit * double-decker-bus) or Mgddb for short.
In summary, the energy stored in this phone's battery is just shy of 7000Mgddb (assuming this phone battery has 3.7V like mine)
P.S. I know the standard length unit should be linguine but it sounds much more fun to ship a bus to Mars and stand it on end for the necessary experiments!