Canon LP-E8 Battery (2-Pack) and Dual Charger by Wasabi Power
Amazon.com : Powerextra LP E8 2 Pack 7.4V 1800mAh Li-ion Replacement Compatible with Canon LP-E8 Battery for Canon Rebel T3i, T2i, T4i, T5i, 600D, 550D, 650D, 700D, Kiss X5, X4, Kiss X6,
Tectra 1PC LP E8 LP E8 Li ion BATTERY for Canon EOS 550D 600D 700D EOS Rebel T2i Rebel T3i Rebel T4i Rebel T5i and BG E8 Grip|lp-e8 lp|lp e8battery for canon -