Do not place the charger directly above or below the battery. Keep it on a flat, non-flammable surface.
In the age of YouTube tutorials, why hunt for a specific PDF manual? For a vintage tool like the KL 1206, the manual provides three critical things that generic videos cannot:
The KL 1206 has a history of dust leakage.
Which follow-up would you prefer?
As of 2024-2025, Bosch no longer produces this manual on its primary consumer website. However, Bosch maintains an "Old Tools" archive. Here is how to obtain an official copy: