hmm, for any batteries i use (not only for cameras).
i give them a initial charge of 8hrs, and only charge again when it's fully drained.
I do this for 3 cycles. batteries going good =)
thats y, i was instruct to charge for a certain hrs for the initital charge, eg 8hrs, but even be4 6 hrs, it cut off by itself liao leh, i dun tink it is charging ? it is also not hot, the batt. :dunno: