A lighting system, comprising: one or more light sources configured to receive power over one or more Ethernet cables; a battery pack comprising an energy storage medium, the battery pack configured to receive one or more signals indicative of a power outage condition and to provide power to the one or more light sources over the one or more Ethernet cables; and an output control circuit coupled between the battery pack and the one or more light sources via the one or more Ethernet cables, the output control circuit including a feedback circuit, and the output control circuit configured to manage delivery of power from the battery pack to the one or more light sources during the power outage condition, wherein the battery pack is coupled between the output control circuit and a Power over Ethernet (PoE) switch, the feedback circuit is configured to determine a load power consumption requirement for the one or more light sources, the output control circuit is configured to control power delivered by the battery pack based at least in part on the load power consumption requirement so that the operational life of the battery pack can exceed a minimum threshold time period during the power outage condition, the output control circuit is configured to decrease the power to a first light source of the one or more light sources (110A, 110B) during the power outage condition and increase the power to a second light source of the one or more light sources (110A, 110B) during the power outage condition, and the output control circuit comprises a microcontroller configured to control delivery of power to the first light source independently of the second light source. one or more light sources configured to receive power over one or more Ethernet cables; a battery pack comprising an energy storage medium, the battery pack configured to receive one or more signals indicative of a power outage condition and to provide power to the one or more light sources over the one or more Ethernet cables; and an output control circuit coupled between the battery pack and the one or more light sources via the one or more Ethernet cables, the output control circuit including a feedback circuit, and the output control circuit configured to manage delivery of power from the battery pack to the one or more light sources during the power outage condition, wherein the battery pack is coupled between the output control circuit and a Power over Ethernet (PoE) switch, the feedback circuit is configured to determine a load power consumption requirement for the one or more light sources, the output control circuit is configured to control power delivered by the battery pack based at least in part on the load power consumption requirement so that the operational life of the battery pack can exceed a minimum threshold time period during the power outage condition, the output control circuit is configured to decrease the power to a first light source of the one or more light sources (110A, 110B) during the power outage condition and increase the power to a second light source of the one or more light sources (110A, 110B) during the power outage condition, and the output control circuit comprises a microcontroller configured to control delivery of power to the first light source independently of the second light source.