Unfortunately, even though this is a four year old thread now, and I hate posting in it, but, it seems to still be happening, and I cannot get the system to run from the battery no matter how much I reset the SMC from the OS or even when powered off. I’m guessing the bad iFixit battery issue has reared its ugly head at the end of 2019. Are there any other ways to attempt to correct the battery condition, or do I just need to try and get a new replacement battery? Its a late 2011 macbook pro. And yes, I even reset the PRAM attempting to fix this. I did get it to not recognize the battery entirely once, but then it just went back to not running from the battery like before after another SMC reset.