I have a new 2015 production RV-12 and I want to practice using the dual Dynon Skyview DV-D1000 while on the ground, possibly for an hour at a time. I went to hookup my BatteryMinder 1212 and learned that the battery post bolts are rounded and couldn't connect the clips. In your experience can I run one or both of the Skyview screens for an hour without running down the battery? I have read on this forum that connecting the pigtail "permanently) and directly to the battery may not be that safe but not sure its worth (or have the skill) creating a remote ground.