Thank you all for the replies.
As it turns out a single will work for now. Have 4 batteries but only is worth using, the other three are swelled up and in Assistant it shows a lot of variation between the cells.
One of them shows 7 discharges, two only show 3. I think these batteries are a lot of money for what you get. I might as well buy the cheap knockoffs. I'm not real happy about paying $129 for more if this how they last.
Yes I purchased this Phantom 2 V+ used but how can the batteries be in this condition? They are "smart" and control the charging so they don't over charge, you can't run them down too far either.