Amazon.com : BM Premium 2-Pack of LP-E8 Batteries for Canon EOS Rebel T2i, T3i, T4i, T5i, EOS 550D, EOS 600D, EOS 650D, EOS 700D DSLR Digital Camera : Electronics
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Canon EOS 550D / Rebel T2i , previewed with samples: Digital Photography Review
Amazon.com : Neewer BG-E8 Replacement Battery Grip for Canon EOS 550D 600D 650D 700D Rebel T2i T3i T4i T5i DSLR Cameras, Comes with 2-Pack 1140 mAh LP-E8 Replacement Li-ion Battery and Dual
Opteka BG-E8 Replacement Vertical Battery Grip With Sure Grip Technology (4516B001) For the Canon EOS Rebel T2i, T3i, T4i and T5i DSLR cameras Includes Bonus 47stphoto Microfiber Cloth - Walmart.com