bob_ninja, thanks for the analysis of power requirements of this type of device. Even though you don't own an iRex product, I think you're aware of the history of iRex with the iLiad, and their failed commitment to better power management. While it is reasonable to point out that there are going to be limits to how long the larger, more complex device can run on the same battery as a smaller, simpler device, the fact remains that iRex has made
and is continuing to make claims about battery life that are probably unrealistic, given the power requirements, power source (battery) and lack of tested power management functionality. iRex gets no slack from me on this one; putting off answering questions until "Karel comes back" doesn't help my opinion of them at all. It doesn't matter to me what iRex theoretically could do to improve the battery life on the DR1000, because I have virtually no confidence that they will ever do any of it.