Update: Sold Out.
Amazon has the ZeroLemon Samsung Galaxy S III 7000mAh Extended Battery for only $24. This case will add over 4 days of battery life to your Galaxy but unfortunately will also add a bit of bulk, a small price to pay to keep your smartphone rocking for days. ZeroLemon boasts that this is the world’s largest capacity battery pack for the Galaxy S3.
FTC: We use income earning auto affiliate links. More.