The supplied batteries (make "Ultra Fire"), however, are useless. According to label you should have a capacity of 3000 mAh. Compared with existing Samsung batteries, which should, according imprint only 2200 mAh, keep the UltraFire only about half as long by. Its capacity therefore corresponds probably 1000 - 1200 mAh. It is also striking how much lighter the UltraFire compared to Samsung.