Transmitter battery

[john333]

Hi all, I have recently bought a nimh transmitter battery for my 3VC.
It's a high capacity one which I would have thought would last a couple of weeks at least.
The thing is the on board volt meter reads 9.8v when first charged but very quickly drops to about 9v and then stays there for ages (it's a 9.6v pack by the way) Is this correct?
I only have the Futaba charger to charge it with so takes an age to charge up from flat, will this damage the pack?
Finally, do nimh cells have a memory like nicads do? i.e. should I let the tranny go flat every few weeks, or just keep topping it up?

Thanks, John