This battery is probably a copy, it was delivered in an envelope without Samsung bulk packaging. The battery was holding little better load my original battery 2 years old (why I bought this one) and after less than 6 months of use the battery does not work at all (the phone s' with not light, I am forced to use my original battery). Also my original battery is manufactured in china japan meeting while the Amazon is manufactured and assembled in China. I think it's shameful that a product sold and shipped by Amazon can be a counterfeit.