very good
Arrived in Denmark in one month. I used this in a GT-i9195, which supports four-pin NFC-enabled battery. The phone does not NEED a four-pin battery, though, as this three-pin battery version works just as well, except of course with NFC now non-functional. I've only used it for the day, so it's impossible to say anything about long-term performance, but it's heavier than the original Samsung battery, and for the day, it's been using about 1 percentage point of battery for every two hours of phone on-time, so it appears to be a very good battery.