Have the product as a replacement battery for my almost 2 year old Samsung Galaxy Ace 2 ordered. Actually, I can not judge whether the battery is better than my age or not, I notice little difference for (older) only. I invite my phone routinely almost every day. It is perhaps just the cell phone and my usage, that the battery lasts a long time.
When I use my phone a lot, my battery not even holding but until the evening. If I'm still on the road and need urgent call, it's very good to have a second, full battery case. In this respect, the product fulfills its purpose.
