The Sept. 2 Deal of the Day often is one of our first accessory purchases. The Seidio Innocell 1900mAh Slim Extended Battery for HTC EVO 3D gives you a 9.9 percent boost over the stock 1750 mAh battery that comes with the EVO 3D, and it does so in the same slim form factor. That means no unsightly bulge, and it'll work with your existing cases and chargers. And, best of all, it's available today for just $34.95 -- that's 30 percent off. Get yours now while supplies last!