Test #1 using only (2) 7.2volt battery packs in series 12cells producing 14.4volts in total but battery were fully charged 2-3 months ago for the test they were NOT fully charged. Second test will consist on fresh charged batteries. The total voltage for this setup with 14cells will be 16.8 Volts with 3800mAh.
http://www.youtube.com/watch?v=BIJFO2YCbiQ
More videos soon