Okay, now that I have 16 flights on the Morris Topcap I feel at least somewhat qualified to say that Lithium Polymer cells work amazing in this plane.

Let me give you an idea, I recharged by batteries at 2 flights so I could measure exactly how much it would take out on my next flights. Well, I did another 14 flights over a 2 day period LEAVING the plane and transmitter on the whole time inbetween flights refueling etc. Went home and measured the battery.... 7.81V!!!!

Give you an idea, 8.4V is fully charged, a 2s Lipoly puts out 90% of its power from 7V-8V. So I can easily get 30 flights here per charge with safety margin, gotta love it!

You guys need to try it