Hi Scott, just bought one from the caravan and camping show we had up here a couple of weeks ago and think its great. Works well just don't have your fire raging as the roast will burn on the outer and we were told to use the grill plate under it as it aids in even heat dispersal. As for the life of the batteries, can't say at this stage as it hasn't run dry yet.
Cheers mate and enjoy. Luv the PIG.
