It may be typical, it may be a lemon. You never know with the offmake stuff. I've been very lucky so far. Most of my spares are third party batteries, and they've outlasted the originals, although the visual quality is a little shaky to me. I've found my np-e3 replacements to be better performers than the originals for my 1D II. All my spares for my other cameras are also third party, and I haven't noticed any performance hits on those either. I'd call up the place you bought the battery from and try to get a replacement.
Leon