Amazon.com : Energizer ENB-CE8 Digital Camera LP-E8 Li-ion Replacement Battery for Canon (Black) : Electronics
Amazon.com: Kastar LPE8 Battery (2-Pack) for Canon LP-E8, LC-E8E, Canon EOS 550D, EOS 600D, EOS 700D, EOS Rebel T2i, EOS Rebel T3i, EOS Rebel T4i, EOS Rebel T5i Cameras and BG-E8 Grip :
Amazon.com : Energizer ENB-CE8 Digital Camera LP-E8 Li-ion Replacement Battery for Canon (Black) : Electronics