The Free On-line Dictionary of Computing (30 December 2018):

Smart Battery Data
SBD

    (SBD) A method to monitor a rechargeable
   battery pack, initiated by Duracell and Intel.  An special
   IC 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.

   Smart Battery System Implementers Forum
   (http://sbs-forum.org/).

   (1999-08-08)