A:AnswerIt is compatible with the t5i. It has several attachments in it so it is compatible with a lot of DSLR Canon cameras. See the attached photo for the full list.
A:AnswerIt appears to be compatible with both models, LP-E8 for your EOS 550D and LP-E5 for the Rebel XS. See the attached photo of the back of the box for the full list.
A:AnswerRE check your connection. Mine wasn’t completely seated and did the same thing. I unplugged from battery pack charger and firmly replaced it and it worked.