ORIGINAL: NiMH dont have memory, but they do need a 1c formation charge and or 4 or 5 cycles initially before they come up to full capacity. Also other than the occasional discharge to verify capacity, NiMH batteries dont get any benefit from cycling, infact according to Red its not good for them.
Also, the voltage readout on your transmitter may or may not be the most accurate thing in the world though the ones I have seen that are off are usually off a consistent amount.
One other minor fact to add to the discussion, a synth module will add to the current draw of any transmitter its installed in so a 9c with a synth module will appear to have worse battery performance than another 9c with the same battery and a crystal based module.
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ORIGINAL: MikeEast
If they do not have memory then why do they start out with a very gently curve of decline from 108-9.8V when they are new but after a few charges they will sharply drop to 9.8V and then slowly discharge from there? Honest question, Im not being cute.
I'd never accuse you of being cute Mike!
I've paged Red to provide more indepth info before I stick my foot in my mouth.