The charger is great and super convenient but the battery that gives us is not at all as good as the one we receive with the phone. even when it's crazy because it's sensee be an "original Samsung battery." If one looks closely, one can see that the battery that receives the phone, it is written "made in Vietnam" while on the one that gives with the charger that is "made in China". I do not know if that is the reason that a silk better quality than the other but it shows that it is not the same battery that gives the phone.