Easy installation as it came with the stickers that will stabilize/attach it to the phone.
It is not original, however, the safety logos are displayed which indicate that the battery meets safety standards as it has passed the tests...(whether this is true or not I do not know)...
Anyway, after I installed it, it worked immediately and was even pre-charged (60% if I remember correctly).
It replaced the original one which lasted 5 years of use.... so far (10 days after installation) it works very well...
I don't have excessive expectations since it is not original, but for its price (twenty euros and some change) it's just fine....
It does not discharge quickly.... Easily lasts a day from 100% (with moderate use).
Phone it was installed on: Samsung Galaxy S20 FE

27/12/2025:
Less than a year of use, unfortunately the battery has reached (with moderate use of the phone and charging it reasonably - without fully discharging) 77% of its health (according to measurements via AccuBattery app, continuously recording the phone's battery)....
I contacted skroutz as well as the company I bought it from and unfortunately battery replacement is not covered because - according to legislation - the six-month usage period, during which replacement could be made, has passed.

09/01/2026:
After a professional check with approved battery measurement tools (from Samsung Service Hellas), the battery health has reached 89%!!!
So, probably the measurement via the app was incorrect.
Draw your own conclusions.......

I advise you to charge your phone only with a charger that meets the charging criteria/specifications of the phone and not something less (a charger with lower watts) as this way you avoid incorrect values from the battery health recording app.