I've patiently been waiting for this to arrive in the ShopCrackBerry.com store, and it's finally here! Seidio's new 2600mAh Extended Battery will keep your Curve rocking all day and night and day and night and day and night and hopefully another day or two or three.... :-)
The required (and included) battery door extends your BlackBerry's casing around the battery enclosure by about 4mm and is made of a hard plastic with a smooth rubber finish that is scratch resistant and provides a nice grip! The extended battery kit sells for $49.95. Look for an indepth review in the near future. If you're looking to extend your Curve's battery life, but don't want to extend the casing, Seidio also offers a 1300mAh OEM-sized Extended Battery that is a longer-lasting direct replacement for the 1000mAh battery the 8300 Curve ships with (1100 mAh in the 8310 & 8320).