The 2150mah battery gives your phone a "big-ol-butt". its not bad but it certainly feels different than the slim and trim innocase which seems to fit like a glove. 2150 battery and door View attachment 15828 Seidio innocase with stock size battery View attachment 15829 btw- during my research i couldn't find pictures to make a comparison. $60 is a lot to invest based on word of mouth testimony. i hope these help you if you're on the fence.