I got a couple runs in on the 5200's today.They seem to be doing real good.Running them in my Erevo with 36-60-2000 Medusa and Quark ESC.They out performed my SPC 8000mah packs by about 1mph.I quit running them before my lvc kicked and they took close to 5000mah,they were only 72 degrees at the end of the run.45 ambient.