With the various models of adjustable voltage chargers people are getting now like the PowerMax or Meanwells you have to have a table like the one Mark posted a while back in one of these threads. Gives the equivalents for voltages at 77F at a range of temps.
I printed a copy to keep handy..
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/26669731.cfmMy 1093 has temp comp and shows the voltage it is using on its readout. So with the adjustable charger and 1093 both on the job, I just note what the 1093 is at, and use the same voltage for the PowerMax adjustable.