Guaranteed brand new product when purchased Samsung original battery for Galaxy S3 It is recommended to fully drain and fully charge the battery especially during the first 3 charging and discharging cycles doing so may greatly improve the overall life of the battery 2100mAh battery allows you to store power necessary to keep your device charged throughout the day Samsung uses the latest Lithium Ion battery technology giving you the best performance possible for your Samsung Galaxy S3. Lithium Ion batteries are designed specifically for your Samsung mobile phone to deliver the most reliable and long lasting power.
Wish I'd have read the reviews before buying. This is not the factory original battery that was included with the S3. Most notably, it does not have the NFC (Near Field Communications) antenna in it which means S-Beam, Google Wallet, Samsung Galaxy Gear/Gear 2 pairing WILL NOT WORK if you are using this battery.I haven't attempted to confirm yet if this is a completely counterfeit product (i.e. not actually produced by Samsung) or if it is simply an alternative m..