generic EN-EL1 batteries

Hi
Im looking on ebay to buy a new battery for my Nikon CP5700.. There are a
lot of generics that are less than the price of the OEM battery that NIkon
offers..
They have higher mAh as well.. 900mAh for some generics, and 680mAh for the
OEM NIkon battery.

My question is, what are the risks of using these batteries? Will they
leak? Poor performance in high temps? I am going to South East Asia soon,
and its quite hot there.. I only have one OEM battery for my 5700 and it
doesn't last too long. I need a couple more batteries at the very least!!

Thanks for any response

 

I got a couple of generic batteries (Maxell) for a Canon S20 from
J&R. Same mah & voltage rating. I have no fear that they'll leak
or will perform poorer at higher temperatures, but I can't say that
they're identical. They seem to weigh just a tiny bit less, and I
don't feel like cutting them open to compare them. For now they
perform just as well as the original batteries with Canon's label,
but it'll take another year or two to give them their final grade.

They probably contain 3 solder-tab AAA NiMH cells inside, and for
all I know, the Canon batteries may have bought the same cells from
the same manufacturer. I'd be more cautious if the batteries were
Li-Ion, since that type has been known to occasionally overheat
catastrophically. But in those cases the fault was probably due to
poorly designed charging circuits, and not to the batteries used.