Opteka NB-2LH 1800mAh Ultra High Capacity Li-ion Battery Pack with AC/DC Rapid Battery Charger for Canon Digital Rebel XT & XTi Digital SLR Camera Memory free for maximum performance, Ultra high power, True 1800mAh , Lithium Ion 7.4v Extended shots - Up to 25% more State-of-the-art-components, Top graded and matched cells used exclusively, Built-in safety fuse Brand New, 2 Year performance warranty Includes Rapid travel charger