I ordered and received this battery for my Galaxy S2 to replace the original battery. Attractive price but questionable quality in the practical test. The SAV AnkerDirect was very efficient in offering me sending a new battery to proceed with a new trial. Since the other Anker battery even let me go in airplane mode without undisturbed night. Off the phone when I woke up while it is 80% going to bed. The new battery received very quickly appears on its promises and keep him propose a "normal" load for this generation phone. I thank Ankerdirect for their seriousness and their very professional attitude is rare enough to be noted. Thank you.