Systems, methods, and/or techniques (“tools”) for hybrid operating systems for battery powered computing systems are described herein. The hybrid operating systems (OS) may include a full-power OS component that enables the computing system to operate in a full-power mode, and a low-power OS component that enables the computing system to operate in a low-power mode. In the full-power mode, the computing system consumes a first amount of electrical power, while in the low-power mode, the computing system consumes less electrical power. The computing system may include a processor that consumes a given power amount of power, and a low-power core processor that consumes less power than the processor.