I'm having nearly the same problems.  I can't get my phone to charge to 100% in a reasonable amount of time.  Prior to the update it took just a couple hours from nearly 0% battery.  I've had this thing on charge all day today and have not been using it at all.  An hour ago it said it was at 90%.  I haven't touched the phone since then until just now - it's at 87%.  That's what prompted me to log into this forum....  very perplexing indeed.