RND Power Solutions Extended High Capacity Lithium-Ion Battery (35H00123-22M) + Back Cover for HTC EVO 4G Perfect High Capacity battery made specifically for your HTC Evo 4G Smartphone. Designed to extend the battery life of your phone at an affordable price. Comes with a black replacement door. RND Power Solutions products are quality batteries offered at a great value. Capacity: 2200 mAh