I got some demo units from these guys[1] that use AA batteries for that very reason. no affiliation. haven't tested the units yet. [1] http://www.bluecats.com/

I got some demo units from these guys[1] that use AA batteries for that very reason. no affiliation. haven't tested the units yet. [1] http://www.bluecats.com/ http://www.bluecats.com/