Most compact charger for BP-511?

I love my Sony BCV500 which is hardly smaller than the camcorder battery it charges (and it charges 2 at a time) and plugs straight into the outlet - no wires no bricks - perfect for travel. ( see e.g. for picture http://electronicsemal​l.com/bcporbatchar.htm​l )

The charger that came with my D30 occupies a LOT of space!

Is there such a beast for charging 511 batteries that is as compact as the Sony unit above?

Or a similar one with adapter plate for BP511

Any help on finding a more compact charger would be much appreciated

Thanks
Andy