However put a 3300 pack in it and it's over weight.
This bit refers to the CGM not the Rayspeed...my bad.
Update: I found some specs on the Sanyo site and going by what they give as the weight of their cells (and not counting any wrapping/plugs and wires etc) the difference between 6 x 1500 cells and 6 x 3300 cells is 72 grams.
So I figure on my CGM with 3300 it would be 2 grams over weight
and on my Rayspeed I'd still need to add weight.
Will try and find GP specs.
Update 2: Found the GP specs (but not pack weights) but if it was GP cells the difference in weight between 6 x 1600mah cells and 6 x 3300 cells is 90 grams.