I perfer these over the 5000mah packs
http://www.hobbycity.com/hobbyking/s...dProduct=14991
200 more mah, almost $2 cheaper, and in the USA
I use them in most my RC's(they were ran around 40-50 cycles each). My truggy which runs a MM NEU 2200kv combo, and a Savage with a 150A ESC 2000kv motor in it has no issues at all with them. They have yet to get over ambiant temperature actually.