Garmin Fenix 3 service

A close friend asked me if I could fix this Garmin Fenix 3 - missing a button. The case had to be replaced, we ordered this, new, for less than 20 dollars from AliExpress. easy task, the watch is now working fine. what I've noticed is that the battery for this model is not soldered to the mainboard, there's a small connector doing the job. As always make sure the gasket is well placed.