Editing Smart Battery System (section)

{{refimprove|date=October 2015}}
'''Smart Battery System''' ('''SBS''') is a specification for managing a [[smart battery]], usually for a [[portable computer]]. It allows [[operating system]]s to perform [[power management]] operations via a [[smart battery charger]] based on remaining estimated run times by determining accurate [[state of charge]] readings. Through this communication, the system also controls the battery charge rate.  Communication is carried over an [[SMBus]] two-wire communication bus. The specification originated with the Duracell and Intel companies in 1994, but was later adopted by several battery and semiconductor makers.<ref> Henk Jan Bergveld, Wanda S. Kruijt, Peter H. L. Notten '' Battery management systems: design by modelling'' Springer, 2002 {{ISBN|1-4020-0832-5}} pages 20-22 </ref>
<ref>{{cite news |last1=Peter |first1=Anton |title=AC DC power adapter |url=https://pacolipower.com/ |access-date=30 April 2023}}</ref>
The Smart Battery System defines the SMBus connection, the data that can be sent over the connection (''Smart Battery Data'' or SBD), the Smart Battery Charger, and a computer [[BIOS]] interface for control. In principle, any battery operated product can use SBS.
[[File:Asus Zenbook UX31E - Lithium-Polymer battery controller - Texas Instruments BQ20Z45-48173.jpg|thumb|Texas Instruments BQ20Z45: SBS 1.1-compliant gas gauge and protection enabled with impedance track]]
A special [[integrated circuit]] in the battery pack (called a fuel gauge or [[battery management system]]) monitors the battery and reports information to the [[SMBus]]. This information might include battery type, model number, manufacturer, characteristics, charge/discharge rate, predicted remaining capacity, an almost-discharged alarm so that the PC or other device can shut down gracefully, and temperature and voltage to provide safe fast-charging.