After many good experiences with batteries from Ansmann (AA batteries in the Canon PowerShot 710IS, replacement battery for Sony HX20V) I have now bought this battery for the Canon EOS 100D. Again, the Ansmann powerhouse does a good job, is fully compatible with the camera and charger. I have not compared the duration of use exactly to the original, I do not much difference noticed. Presumably the original battery (850mAh) will hold a little longer. Mind you, I have nothing.