You can get a Canon LP-E8 replacement battery for $14 by AmazonBasics

lp-e8AmazonBasics Li-Ion Battery for Canon Cameras (LP-E8) at a glance:

  • Lithium Ion rechargeable battery replaces Canon camera battery (LP-E8)—or can be used as a spare
  • 7.4 V, 1100 mAh (8.14 Wh) capacity allows for a long run-time on a single charge
  • Fully compatible with Canon cameras EOS 550D, EOS 600D, EOS 700D, EOS Rebel T2i, EOS Rebel T3i, EOS Rebel T4i, and EOS Rebel T5i
  • Manufactured with Japanese cells to help ensure maximum battery life
  • Backed by an AmazonBasics limited one-year warranty

AmazonBasics is making gear at budget prices. After the Electronic Flash for Canon DSLRs, there is the Canon LP-E8 replacement battery for $13.99. Compare at $54.95 for the original Canon LP-E8.