This battery is a copy ... As users GS IV, I recently known syndrome "Battery inflated". In order not to waste my time in conjecture with the VAS Samsung, I ordered this item which unfortunately turns out to be a fake !! This product is simply unusable !! When the load is 100%, the battery generates a major bug the phone can not reboot .. The only solution oter battery to restart the ... AMAZON should withdraw from sale this highly dubious !!