Bests & Worsts Reviews from Amazon

In 8 months of heavy use, I noticed my Samsung Galaxy S3 didn't seem to keep the same charge. I purchased one of these and then tested both batteries using Nova Battery Tester. Here are the results: 8 month old Samsung OEM 2100mAh battery: 1549mAh New Anker 2200mAh battery with NFC: 2254mAh Consequently my effective battery life went up over 30% by switching. I've come across generic batteries that don't deliver on their rated capacities so I was very happy to see that this battery exceeds their rated specs.