Battery is a replacement for the original battery of Samsung to the well 2 years had only 3 hour capacity. Thursday ordered late Samsatg already there. New battery had 69% charge and fit just like the originals. After charging the voltage held for 3 days. Now after a few weeks with some intensive use, the time between charges has stabilized at 2.5 days. I am fully satisfied with the delivery, the price and the quality.