I had always battery problems. I have been using for 1.5 years. 1 month ago i installed b528 rom and nowadays, the charge goes around 4-5 hours. I did not make calibration yet. I have to charge 4-5 times in a day. Until %50, it goes very fast. After %50, it slows down. I dont know what will i do. Maybe buying a battery 2050 mah can help me? I dont know what to do. The best thing seems carrying 2-3 batteries with me those charged the before night. Please tell me some suggestions. 2x 1500mAh HB4F1 Standard Battery for AT&T Impulse 4G Huawei U8800 IDEOS X5 new | eBay HOw are those?