I have given that some thought. I sent them an email asking about the product and what options I have for the d300. . .

As for the cold weather performance of the AA, my lab tests on them confirm that they do not drain down like the lithiums. In fact, at around zero and down to -15 f, my external meter shows them losing very little if any power! I left the batteries in the freezer for 8 hours and tested them on an external tester, after 8 hours they showed full charge on the meter. I put them in the camera and they worked, I did not test how many images I could get with them at that temp, but I should.