SBD (Smart Battery Data) is a method to monitor a rechargeable battery pack, initiated by Duracell and Intel. A special integrated circuit in the battery pack monitors the battery and reports information to the SMBus. This information might include: type, model number, manufacturer, characteristics, discharge rate, predicted remaining capacity, almost-discharged alarm so that the PC can shut down gracefully; temperature and voltage to provide safe fast-charging.

See also Smart battery system.