Has anyone tried to make the Popular combination of the Garmin Echomap 93,and the Panoptix Livescope portable? I'm trying to figure out two things. First: Which battery will give me around 8 to 10 hours of run time. My plan will be to search the new lake with side view using the 93, then use the Livescope once i find that honey hole. Second: Do I need two batteries, (Panoptix, Livescope) or can I get by with just one? Any suggestions on brand? My first Thread after joining. Thanks in advance.