An elevator system provided in an existing apartment building, includes a motor that is a drive source for a lifting mechanism of an elevator car, a power storage device configured to store power supplied to the motor, and a charger configured to charge the power storage device with power supplied from a power grid. A traveling motor, an in-vehicle power storage device, and an in-vehicle charger of a used vehicle are diverted to the motor, the power storage device and the charger. The power storage device is used as a normal power supply of the elevator system. The motor is driven by power supplied from not the power grid but the power storage device.

A gearless elevator drive system includes a rotatable shaft extending in an axial direction (A) between a first end and a second end of the shaft; an electric motor provided at a side adjacent to the first end of the shaft and coupled to the shaft for rotatably driving the shaft; at least one tension member coupling portion provided at a side adjacent to the second end of the shaft and configured for coupling the shaft with a tension member that is provided for suspending and driving an elevator car; a brake disc provided between the electric motor and the at least one tension member coupling portion and configured for rotating concurrently with the shaft; and at least one brake actuator including at least one brake shoe and configured for selectively urging the at least one brake shoe against the brake disc for braking the brake disc.