So randomly my brother's Galaxy S3 stopped
recognizing receiving power from the battery. He thought maybe the battery was dead but we've tested with my battery (fully charge) and nothing happens. When plugged in with a full charged battery it shows the battery level indicator screen with an empty battery. Any ideas? Have flashed phone back to full stock just in case that was causing issues.
EDIT: Realized the battery is recognized but phone is not getting any power from it. With battery in I can boot into download mode. Without battery in I cannot boot into download mode.
Also re-unlocked bootloader, flashed an old version of CWM and cleared battery stats. No dice.