What happens if the batteries go flat?

The batteries are monitored by a system that checks their status and stops the lift when the batteries are not sufficiently charged. If this happens during a run, the system ends the run and remains stopped at that floor while it recharges. As soon as the batteries are sufficiently charged, the system starts working normally again. We can assure the customer that this type of situation occurs only very rarely because the batteries are sized according to a number of insertions per hour that the lift is unlikely to ever perform.