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Product Features-6400mAh extended battery with NFC feature for Samsung Galaxy Note 3Perfine Battery and Accessory Combo for cell phone offers all of the add-ons necessary for proper maintenance of your phone.180 days worry free warranty support1.Multiplies as much about 2.0X power source as the original 3200mAh Note 3 battery2.Latest Li-ion Technology,made of top quality A+ grade lightweight lithium cells and carbon material for an ultra portable product and rigorous inspection tests ensures reliability3.Compared with Nickel-Cadmium battery, the Li-ion battery has no memory effect,no capacity reduction.4.Perfine offers you 2 specialized back-pieces to install the extended battery for Note 3.5.Relatively high energy:Having a high energy storage density has reached 460-600Wh / kg, is about 6-7 times that of lead-acid batteries6.Lower self-discharge rate: is one of the most prominent advantages of the battery, and can be done by 1%/month or less, less than 1/20 of NiMH batteries Compatible Models: Samsung Galaxy Note 3, N9000, N9005, N900A, N900, N9002NOT for Samsung Galaxy Note 3 Edge Tips:1.Please continue to charging 20-40 minutes to allow fully charge after reaching 100%,if you unplug it immediately,then it will die off very quickly like a normal battery.This is the fault of Samsung itself,since it's not designed to handle batteries of this capacity. 2.Please use original manufacturer charger as cheap chargers showed flaws of functionality and circuitry. 3. Repeat 3-5 times charging cycles, your new battery would reach its best performance. please contact us for any questions. Thanks a lot for your trust and support!