The 2000 mAh battery lasts as opposed to the factory supplied 1650 mAh battery a little longer. During survived the SGS2 supplied only half a day for me, it creates the Extended Battery Kit now loose my device to supply throughout the day with energy. And I am continuously connected to the mobile Internet and use the SGS2 primarily for music playback, Internet services and task scheduling, such as calendar and email. With more complex games the battery will naturally short. How quickly the battery can be loaded I do not know, because I always charge the phone overnight. I especially like the increased battery cover because the camera lens is now better protected and the phone in my opinion a bit better in the hand. The extra weight is even compared to a SGS2 1650 mAh battery barely noticeable and therefore not worth mentioning. Best thing overall.
