Samsung Mobile India launched the Galaxy S III, the flagship Smartphone in India in late May, 2012. Samsung has announced that most of the accessories for Galaxy SIII will be available along with the phone in retail market. Accessories like additional battery ( 2100 mAh with NFC) was not available till now. But now it is available in the market, so if you want an additional battery for the Galaxy S III, you can get it now.
The Galaxy S III battery is available in major cities of India for an MRP of Rs. 1599.