I heard that the new CP1300 cells are the replacement for the 8x800ar. I think the CP1300's are 4/5 SC. If you make the battery in the configuration you need for a Zagi or Pico Jet, will they fit into the battery tray???

I have 12 CP1300 in my Pico Jet.

The CP-1300SCR cells are 1/2 subC. They are the same 23mm diameter as regular subC, but ony 25mm long.