I bought 3 of these batteries as well as 2x 2s 5000 50C for y sons short course and charge them with a Hitec X2v at 8amps. I have never used LiPo before but I am 3 months in and racing a super competitive 1/8 e buggy class here in Northern Colorado. Batteries are working perfectly even in 10 minute mains in 90+ heat. Very Happy.