we have no battery on the board itself. maybe that helps, but there is no instruction on the battery. can you please provide a specification for that? also, how does the SKC know the time when the firmware s only uploaded via the Arduino IDE?
also the sheet you sent seems to be informative, but in fact maybe way too long. would it be possible to get a simple conversion table? having a conversion ratio for each value would be nice. if the dependency is more complex, then having an equation would be nice.