I never said they were needed.
I said I would recommend them.
ORIGINAL: aresti2004
ORIGINAL: Geistware
I would recommend Sub "C" cells and my preference is NiCads.
Sub-C anchors are NOT needed for normal reciver/servo use. I have used 1100 and 2700 NiMH (5-cell packs) in large scale aerobats with up to 12 digital servos without a single probelm.