CNHL Black Series V2 22.2V 6S 1100mAh 130C LiPo Battery - XT60

Great

Good battery

Its lasted

$20 for a 6S 1100mAh lipo. You really can't beat that. As others have said, it's a little heavy compared to other packs of similar specs, but I find CNHL lipo's usually are. I don't really notice it when flying. It's nice to have a few of these to be able to beat up a little bit when trying something new, or maybe running it down to a slightly lower voltage than I would with other more expensive packs. I've read some reviews saying that these didn't hold up well in the long run. I only have about 20 cycles on this one so I can't speak to that, but they still seem to be holding up well even with a little abuse.