Answer to: iPhone 5 battery replacment failed, due to U2 IC chip malfunction.I have the same issue. Here is my fix Whenever the battery dies 100% I open it up and remove the battery (very easy to do with a $3 kit from eBay) Fortunately my gf has the same phone so I open her's up, remove her battery then put mine in to charge. Once charged i put the original battery back in my phone and it works. I then put my gf's battery back in her phone. I can do it now in under 5 min.