AT&T Samsung Galaxy S2 S 2 II SkyRocket SGH-i727 Extended Capacity 3600mAh Li-Ion Battery + Battery Back Door Cover - Mobile Phone Repair Parts Replacement AT&T Samsung Galaxy S2 S 2 II SkyRocket SGH-i727 Extended Capacity 3600mAh Li-Ion Battery + Battery Back Door Cover Mobile Phone Repair Parts Replacement Rechargeable with no memory effect This item is not for Samsung Galaxy S2 i9100