I can tell you for a fact from my experience that nimh bateries will not take a full
charge until they have been cycled a few times. I use a Sirius forming charger
which charges the battery 18 to 24 hours at a very slow charge, then a Sirius Cycler
which discharges and records the mah capacity of the battery. Every nimh battery I
have ever used would not go to full capacity until it had been cycled 3-4 times.
Don't risk your airplane because of impatience.

tommy s