Originally Posted by ElAguila
So far I have only found 3 slim extended batteries for the N3 that have the nfc chip on them. They are on e-bay. I have note heard of the Deep Stretch brand(4380mah) nor the JQDesign brand(4400mah). The third one is a 3660mah battery from AceSoft. i have used their batteries before. My experience with them was that the battery wasn't quite what they advertised but it was definitely better than stock. With that said, I can't recommend any of the these batteries over the the other. Personally I would go with the AceSoft because of my previous experience. If you have the money to get then I would pick one of the 3 and see if they are as advertised.
You will be hard pressed to find an OEM sized extended battery that actually come close to their claimed mAh. If you really want an extended battery your gonna have to get a real extended, and bigger, battery.
I personally just go with a second OEM battery. I rarely need, but have it just in case.
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