I have one coming from Ebay as well. Now, can I ask for some assistance on what I should be monitoring and what I should be seeing? In the past, we spent no more than one night at a time unplugged, so I never really worried about battery charge. Retirement is coming, and we hope to do more. I have a 2 golf cart 6 volt battery system and PD converter, so hopefully I'm good from that standpoint. We will be carrying a generator to top off batteries, etc, but I really don't know the parameters. Any and all help will be appreciated.