Liying-brand High Capacity 1850mah Business Lithium Battery for Samsung Galaxy S2 T989(t-mobile) Replacement spare battery for Samsung Galaxy S2 T989( T-mobile) Type: Li- ion battery; Voltage: 3.7V; Capacity: 1850mAh, more than 500 charge cycles Ultra-Long Standby Time; Same Size as your original battery; certified by CE / RoHS Package includes: 1 pc cell phone battery; 24 * 7 email support;100% satisfaction GUARANTEED Made of grade A Li-ion cells and highest quality raw materials,built-in protection circuit to assure safety under all circumstances