Benchmark for the life of LiPos is 1000 cycles. Obviously every battery is going to be different. Top brands in quality would be Thunder Power, RevTech, Orion and there are a few more just do a little research. The Turingy and Gens Ace batteries are good batteries to for the price. Out of those batteries it depends on what your looking to do for price/performance, are you going to bash or race?
Team Watts Racing