The PRIV 's battery is not removable. I figured out it was a particular app I installed around the same time that was causing the issue. The app was causing the phone to get so hot from high cpu usage combined with the heat of wireless charging that the phone was halting charging everytime the temp got too high. So the PRIV did its job by preventing overheating and damage to the battery and/or the Qi charging pad in the phone. I uninstalled the app and I'm fine now.