Haven't found it online. Was looking at what the dealer service manual states when changing (generic) batteries. Also asked Liteblox directly, they all told me the same. The internal battery management system needs a bit of time to understand how to work with a LiFePO4 battery, but eventually it will and everything will work. In particular it has to understand when to charge the battery via the alternator, usually it does that by looking at the voltage and when it drops below a certain threshold it then lets the alternator charge it. With LiFePO4 batteries this does not work, since the voltage doesn't drop when the battery discharges. This is what the battery management system of our cars has to learn.
With my car it took roughly about a week before the car was charging the battery the right way. Until then I could use my car normally, I just needed to have a look at the battery charging percentage. In that timeframe the battery was dropping to 1% charge before the car would charge it back up to ~20% before it would stop again. You could force it to charge more when getting off the accelerator and by "sailing" a bit. So I just had to take care to not leave the car with 1% charge left in the battery
But after said week it now works flawlessly, battery is nearly always at 100% and charging.