Marty, what capacity pack and what voltage do you see after 1 flight. I was charging the pack after each flight and putting between 75 to 80 ma back into the pack so I'm sure that 800 ma is plenty capacity but that drop to 6.5V no load and with load it was dropping to 6 V. Im going to pull it out and see what the individual cells are reading. But everything went well got a couple items to change before she goes out again.