I'm not sure if I should post in this thread or start a new one. I will start here. Apologies if I'm in the wrong place.
My GS3 was fine until about a month ago. The battery drain is so severe my battery will drain even when plugged in. This is using my original charger. I also tried my wife's charger (also a GS3) and different outlets. Last night, I booted my phone in safe mode and ran a Youtube video. I dropped about 3% for a ten minute video while connected to AC in safe mode. I then powered off my phone and let it sit for 5 hours on the charger. My battery was at 29% after five hours. This seems to be an extreme drop.