This is the LP-E10 Lithium-Ion Battery Pack from Canon. It fits the Canon EOS Rebel T3 and T5 cameras. Small and lightweight, Lithium-ion batteries can be charged or discharged at any time without developing memory effects.
The Canon LC-E10E Battery Charger for EOS Rebel T3 and EOS Rebel T5 is a replacement battery charger for the unit that comes with the EOS Rebel T3, T5, and T6 cameras. The LC-E10 charges the LP-E10 Li-ion battery pack that comes with the camera.