Grip Oem

Digital SLR’s and their batteries?
I’m shooting a Nikon D90
and I recently bought a battery grip.
The OEM battery for the Nikon D90
is the Nikon EN-EL3e Li-ion 7.4v 15mAh.
I was looking to replace it with a third party battery designed for the Nikon D90.
It seems to have a similar description.
Replacement for Nikon EN-EL3e Li-ion 7.4v 18mAh.
as you see it has a 1800mAh rating compared to the OEM 1500.
is this bad for my camera? in any way?
here is the link to the battery.
http://www.emartcentral.com/batt-en-el3e-d300.html?gclid=CPrSs5a3o6ACFSpeagodMlwzag
Do yourself a favor and don’t buy the generic batteries. The lifetimes on those things tends to be less than a year of use. On the other hand, you can shoot with real Nikon batteries for quite a few years before they start to lose charge.
$23 (total with shipping) for the fake battery vs $39 for the quality battery: http://www.amazon.com/gp/product/B000BYCKU8?ie=UTF8&tag=thdifa-20&linkCode=as2&camp=1789&creative=390957&creativeASIN=B000BYCKU8
I’d call it an extra $16 well spent.
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After Market T2i/550D Battery Grip