There was some confusion at the LG G2 announcement event with some sources pointing to a 2,160mAh battery , while others said the phone features a larger, 3,000mAh unit. Further stir was made with some LG documents and white papers of the device stating the presence of a microSD card slot, when that wasn't announced at the event and the smartphone units there didn't have expandable...
Source: http://www.gsmarena.com/korean_lg_g2_to_feature_2610_removable_battery_microsd_card_slot-news-6546.php