{"schemaVersion":1,"slug":"ansi-battery","name":"ANSI/IEEE battery symbol","kind":"symbol","abbreviation":"BT","aliases":["IEEE battery symbol","ANSI multi-cell battery symbol","IEEE 315 battery"],"category":"microgrid-systems","drawingTypes":["SLD","Schematic"],"referenceFamilies":["IEEE / ANSI"],"summary":"IEEE-style multi-cell battery drawn as alternating long and short plates, with polarity marked, for American drawing sets.","description":["In IEEE-style drawing sets a battery is drawn as alternating long and short lines, the long line being positive, with either several plate pairs or two pairs separated by a dashed line to show that cells are omitted. The device designation is commonly BT or B rather than the IEC letter G.","The form appears on station DC schematics, control power drawings and microgrid single-line diagrams in North American projects. This is a convention-specific lookup; the geometry here is independently drawn to explain the connection, and is not a certified reproduction of the standard graphic."],"readingNotes":["The longer line marks the positive terminal.","A dashed gap means additional cells not drawn."],"drawingChecklist":["State nominal voltage and ampere-hour capacity.","Mark polarity.","Cross-reference the battery charger and DC distribution."],"distinction":"The IEEE convention uses BT or B as the device letter; the IEC convention uses G for the same battery concept.","facts":[{"label":"Device letter","value":"BT or B in IEEE-style sets"},{"label":"Standards context","value":"IEEE/ANSI 315-1975 covers diagram graphics. IEEE lists this edition as Inactive-Reserved."},{"label":"Artwork scope","value":"Original functional illustration; exact standard glyph and compliance are not certified"}],"references":[{"sourceId":"ieee-315","relevance":"IEEE/ANSI graphic-symbol standard status and context; not a source of reproduced artwork."},{"sourceId":"ansi-autodesk-34282bfd-7b8e-48f3-a6ed-93adbdddfbd3","relevance":"Public IEEE-oriented miscellaneous symbol preview page used for convention context."}],"related":["battery","battery-single-cell","float-boost-battery-charger"],"artwork":"s28-ansi-battery","publishedOn":"2026-10-28","updatedOn":"2026-10-28","provenance":"independent-public-research","symbolVariant":{"convention":"IEEE / ANSI","form":"IEEE-style multi-cell battery with omitted-cell gap","counterpart":"battery","reference":"Form described from IEEE/ANSI 315 drawing practice as publicly summarised; no certified reproduction of the standard graphic is asserted."},"plainEnglish":{"title":"What does ANSI/IEEE battery mean?","introduction":"In IEEE-style drawing sets a battery is drawn as alternating long and short lines, the long line being positive, with either several plate pairs or two pairs separated by a dashed line to show that cells are omitted. The device designation is commonly BT or B rather than the IEC letter G.","example":"The form appears on station DC schematics, control power drawings and microgrid single-line diagrams in North American projects. This is a convention-specific lookup; the geometry here is independently drawn to explain the connection, and is not a certified reproduction of the standard graphic.","drawings":"The longer line marks the positive terminal. A dashed gap means additional cells not drawn. The IEEE convention uses BT or B as the device letter; the IEC convention uses G for the same battery concept.","terms":[{"name":"DC","meaning":"Direct current: electricity flowing in one direction."},{"name":"Terminal","meaning":"An identified point where a conductor connects."},{"name":"Rating","meaning":"A value stating the conditions for which equipment is specified."}],"diagram":"flow","steps":["Identify the device and form","Read the connections and state","Check the equipment reference"],"caption":"A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.","sources":[{"label":"IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams","url":"https://standards.ieee.org/ieee/315/515/"},{"label":"Autodesk IEEE Symbol Preview — Miscellaneous","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-34282BFD-7B8E-48F3-A6ED-93ADBDDDFBD3.htm"}],"detail":"IEEE-style multi-cell battery drawn as alternating long and short plates, with polarity marked, for American drawing sets. The IEEE convention uses BT or B as the device letter; the IEC convention uses G for the same battery concept.","profileId":"reviewed-symbol-20261028"},"url":"https://eloragrid.ai/symbols/ansi-battery","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/ansi-battery.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"ieee-315","title":"IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams","publisher":"IEEE Standards Association","url":"https://standards.ieee.org/ieee/315/515/","type":"standard","scope":"Graphic symbols and designation letters. IEEE lists this edition as Inactive-Reserved; it is a historical reference, not a claim of current compliance.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"IEEE/ANSI graphic-symbol standard status and context; not a source of reproduced artwork."},{"id":"ansi-autodesk-34282bfd-7b8e-48f3-a6ed-93adbdddfbd3","title":"Autodesk IEEE Symbol Preview — Miscellaneous","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-34282BFD-7B8E-48F3-A6ED-93ADBDDDFBD3.htm","type":"cad-reference","scope":"Verified public IEEE-oriented vendor catalogue. Block names identify vendor symbols, not IEEE standard symbol numbers. Linked only; graphics and CAD files are not redistributed. IEEE/ANSI 315-1975 is a historical graphics reference with Inactive-Reserved status; this page does not certify current standards compliance.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Public IEEE-oriented miscellaneous symbol preview page used for convention context."}]}