Various methods and systems for hazard detectors are presented. Such hazard detectors may include one or more hazard sensors that are configured to detect the presence of one or more types of hazards. Such hazard detectors may include a circular or a ring-shaped light comprising a plurality of lighting elements. Such a ring-shaped light may be configured to illuminate using a plurality of colors and, possibly, a plurality of animation patterns. Such hazard detectors may include a processing system configured to cause the ring-shaped light to illuminate using the plurality of colors and the plurality of animation patterns in response to a plurality of states corresponding to the battery module and the plurality of hazard sensors.