It looks like the good people at Vessel have improved the original design to make them a little more environmentally friendly. Instead of having to recycle the entire lamp when the battery no longer holds a reasonable charge, you can simply replace a pop-out battery.
We met the Vessel founders, Stefane and Duane, last year at ICFF and are not surprised that they are already improving what ain't really broken. They are constantly coming up with new things. (Thanks, Christian!) MGR