SterlingTek via Amazon offers the STK LP-E10 1,600mAh Camera Battery for Canon for $14.99. Coupon code "7RJ65EN4" makes it free. Plus, Prime members bag free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $5.01.) That's the lowest total price we could find by $21. This rechargeable battery is compatible with Canon EOS 1100D, 1200D, Rebel T3, T5, Kiss X50, and X70 cameras.