My new battery of choice is the Lectron Pro 6S 5200/50. Is has great run time and great power. Also small size and relatively light weight. For under $100 this is what I will be getting from now on.
https://www.amazon.com/RC-Lithium-P...=1540650448&sr=1-2&keywords=Lectron+Pro+22.2v
https://www.amazon.com/RC-Lithium-P...=1540650448&sr=1-2&keywords=Lectron+Pro+22.2v