Questions about Bosch Professional Gsa 12v-14

Of course, all saw blades work and I use them regularly with the GSA 12V-14. In my opinion, only the power (and possibly the endurance) is decisive for a stronger 18V machine, I saw everything with the 12V (wood, steel, aluminium, stainless steel, etc.) and only very rarely reach the load limit and then it's just less pressure, a few drops of cutting oil, a bit more patience. :)

No, unfortunately, the battery and charger are not included.

No, it’s just the tool and the case. No charger or batteries.