I ordered with this grip CANON with concern the compatibility with my camera Eos 550D. My satisfaction was complete for several reasons: - The product was delivered three days earlier than expected, - This grip is not only 100% compatible but with a few more not described: finishing line with that of Canon and battery holder 2xLP-E8 but also the battery holder 6x alkaline batteries. Amazon thank you for everything seriously and your partner full of surprise.