I trusted the comments, so I chose this model with the number of Samsung batteries were counterfeit. AND big disappointment, autonomy is the same as my original battery end of life after 2 years, which is a shame. Forget all mensongez comments that the battery is much better than the original battery, we are very far short of the sudden I lost 15 and I'm no better off because that I have the same autonomy (almost 2 hours) than the original battery end of life.