I don't believe Joyetech makes an 1100 mAh battery. You have a knockoff. I just looked at the Joyetech site and see no mention of 1100 mAh, only 650, 900 or 1000 mAh. You probably have a spinner.
You can tell by the logo on the bottom, has five thread (ego style) instead of usually 3 and the logos on the neck (garbage can with an x through it , and a large C and E ). Mine have an MVS cause myvaporstore is an OEM partner with joyetech and want to know if the battery came from them when returned for defects etc... You can go to their site and see who is an authorized reseller or OEM partner.