Question about Noco GB20 genius BOOST

This item is not a charger, but a jump starter/power bank. Chargers are here (if the car battery is to be charged):
https://www.digitec.ch/de...

The first hit (MXS 5.0) is a classic, very popular among "seasonal car" owners. Has everything you need for charging except "fast". CTEK is generally a reference in the field of chargers, at least for private use, but they don't have the lowest price either.

A charging current around 10% of the capacity is common and gentle -> e.g. 5 A for a 50 Ah car battery.
If you want to charge quickly, currents around 30% of the capacity are feasible (e.g. 15 A for 50 Ah), but this is simply less gentle.

If it's about charging the mobile phone in the car, is that the kind of thing you're looking for?
https://www.digitec.ch/de...