Setting up Edgeworth last week, I nudged one of the buttons on the control panel before I'd plugged the layout in to the mains supply.
To my surprise, a point changed.
This means that the Capacitor Discharge Unit (CDU) has held enough charge to throw a point since the last exhibition.
It's held this charge for over 4 months. Maybe I'm being silly, but that seems pretty impressive for a device that costs less than 14 quid.