BOSCH Intuvia controller / display repair | Battery replacement

Mainly about replacing the battery in the Boch Intuvia controller, but at the end I added a few words about the other controllers. Nyon, as the largest of the available ones, has a battery that is quite easy to replace, in the case of the Intuivia model, cables are soldered. Purion does not force us to replace even a discharged battery, but we accept the display impairment when, for example, the power supply from the main battery is interrupted.