I can't believe the discussion of batteries has gone on this long. Anyway, two more cents worth. The lower the C rating, the longer it takes for the battery to recover from a surge. Since you're closer to the maximum potential of the pack all the time, if you have to surge it to even closer to max it takes longer for the pack to cool off and restore the potential for another surge. If too many surges are to close together you get closer to the danger area. A hot pack draws more amps, just like a motor does. And if your pulling stunts on a low C rated pack, your motor is pulling more amps too. I make it a point to take it easy on my cheaper packs (not that I do a lot of crazy stuff anyway). Although I've never actually seen a pack burn, I came real close when my blade was new. I didn't know anything about the rating deal and put on a 2s pack that I picked up for about 15 bucks. I only flew for three or four minutes and the blade would barely come off the ground. The pack had swelled up to twice its size and was blistering hot. I put the heli down and let it sit for about ten minutes, afraid the full time at any moment it would burst into flames. It didn't. After doing some research I found out the 650 mah pack had a 2C rate. It wasn't marked anywhere on the pack. I was lucky. Now I know what the rate is in advance before I buy it. Yes 1LO64, I checked out the e-powers first, just got cofused earlier. Moral to the story, don't take chances on packs unless you can afford to pay the price. Or the medical bills if it comes to that. I'll step off the soap box now. Somebody elses turn.

And yes I love the DD tail. Mine's tractor and it's my second favorite upgrade after the alum swash. May move to third if I ever get around to installing the BH