ROBOTIC SERVICE DEVICE AND HANDLING METHOD

A robotic service device for a robotic picking system grid. The robotic service device can be configured for driving to any location on the grid in order to restart malfunctioning robotic load handling devices or to perform maintenance operations or cleaning in situ. Additionally, the service device may be used to rescue robotic load handling devices operational in the picking system. The robotic service device can include a releasable docking mechanism to enable it to dock and latch on to malfunctioning load handling devices. A deployable, releasable electrical connecting device is shaped to conform to a charging, powering, or battery component of one or more of the load handling devices.