parabellum
1 MW
Have found this charger. It is CC/CV and there are 3 precision trimmers for adjusting. I think the upper limit is 63V, because of 63 V caps on output side, anyway it takes less then 3 min to change output value (including the time going for the tool box ). I have 1 for 15S / 62V and other on 12S /49.49V. Will take the 600W version next time, it takes to much time to charge 20A battery with 2.5A. Have paid 12U$ for, but the price is always jumping up and down on this site.
http://www.elifebike.com/peng/iview.asp?KeyID=dtpic-2011-1K-D39U.690NW
http://www.elifebike.com/peng/iview.asp?KeyID=dtpic-2011-1K-D39U.690NW