About how long does your nevo battery last when using it with the power down and wi-fi set to never.

I've got the power set to the lowest possible setting, and no wifi, and am not thrilled with the battery life. I've actually been thinking about taking it apart and seeing what kind of battery it has, to see if we could make a replacement like some guys did with the pronto a few years ago. Those pronto batteries made all the difference in the usability of that remote.

I also called UEI about the battery life and their response was that I was lucky that my remote was lasting 9 hours with wi-fi enabled. Although they would not give me much support since I bought the unit on ebay. Apparently people who buy them second hand will aslo be screwed. I think they should rethink their support policy somewhat. I looked at the unit but could not see a way to readily open the unit. I'm thinking there may be some screws under the little rubber feet. Developing a better battery or figuring a way to decrease battery drain on the device would be great. I have also looked a some other posting and other people have had similiar complaints. I thought my unit may have been defective or heavily used since i purchased it on ebay althought the auction said it was new.