RCP57 -
I couldn't agree more with BarracudaHockey. I switched to A123 packs (from Nimh) in February of this year - 2300 mah packs from Radical RC. No regulators on my Futaba 2.4 ghz receivers - 5 S3152 digital Futaba servos (87 oz/in) and 1 analog servo in each plane. Being new to this chemistry, I flew once and recharged (at 1C) at the field - found I only used about 120 ma. This consumption has remained fairly consistent.
I have since installed a Hyperion 2100 mah LiFe battery in my Futaba 10C radio (huge upgrade from the 700 mah NiCads it came with) and am completely sold on this application as well.
Best thing since sliced bread.
Jack