Ok, so my idea of purchasing additional batteries thru sony didn't work out too well. After having ordered the additional batteries over a month ago, I finally called and it seems that there is a backorder that they forgot to mention when I placed the order. So scratch that idea.
Next idea, N-Charge Battery. I have been to their site and initially I am pleased with what they offer, but I am worried about compatability. When I check the list of compatible laptop models, I don't see the exact model mentioned (PCG-GRT250k), but I did see a another option mentioned which may just be a catch all for the models, but it listed a model PCG-GR series. Anyone who has read this far, thanks. Any suggestions are welcomed at this point. I have a full sized laptop that I would like to power for 5-10hrs, so the obvious seems to be N-Charge. Thanks in advance.
Todd