I picked up one of
these lipo's and it came in today.
I know you might be able to get one from Hobbyking for cheaper but, this one came from the U.S.A., I got it only in 5 days after ordering, and there was no shipping charge so it probably wasn't much price difference after you figure in hobbyking's shipping charge.
I also imagine if I had to return it for being defective it would be allot easier than shipping it to China.
Here it is with my new $5.75 lipo sack (also from hobbypartz)I soldered the Deans plug on it.
It's roughly the same dimensions as my Turnigy 1800mAh 3S pack.(103x35x19mm)
I know it's only 15c but it should still put out more amperage than my motor will draw anyways.(about 27A)
I just charged it up and I'm going to run it in my 6800kv RC18T.
I'll post my results and opinions after I give it a run.