{"schemaVersion":1,"slug":"ansi-ampere-hour-meter","name":"ANSI/IEEE ampere-hour meter symbol","kind":"symbol","abbreviation":"Ah","aliases":["IEEE ampere-hour meter symbol","ANSI amp-hour meter symbol","HIN1AHM"],"category":"measurement-protection","drawingTypes":["Schematic","SLD"],"referenceFamilies":["IEEE / ANSI","Manufacturer"],"summary":"IEEE-library ampere-hour meter form for integrating charge in DC circuits such as battery and plating supplies.","description":["An ampere-hour meter integrates current over time and is most often drawn in DC battery, charger and electrochemical supply circuits. It is normally fed from a shunt, so the schematic should show the shunt, its millivolt rating and the polarity of the sensing leads alongside the meter.","The symbol does not say whether the register counts charge in one direction only or nets charge and discharge. Battery state-of-charge estimation depends on that setting and on efficiency correction, neither of which is visible from the instrument form."],"readingNotes":["Find the shunt or sensor that supplies the current signal.","Confirm whether the register is unidirectional or bidirectional."],"drawingChecklist":["Reference the shunt rating","Show sensing polarity","State register direction"],"distinction":"An ampere-hour meter accumulates charge; an ammeter shows instantaneous current and a kWh meter accumulates energy.","facts":[{"label":"Convention evidence","value":"Autodesk IEEE Symbol Preview, Instrumentation and Sensors"},{"label":"Public vendor block name","value":"HIN1AHM / VIN1AHM (Autodesk identifier; not an IEEE symbol number)"},{"label":"Typical circuit","value":"DC battery or charger circuit with a measuring shunt"},{"label":"Artwork scope","value":"Original functional illustration; exact standard glyph and compliance are not certified"}],"references":[{"sourceId":"ansi-autodesk-f44d5059-4728-40bd-b9ba-0de7cfdfaacf","relevance":"Public IEEE-oriented Instrumentation and Sensors preview listing the Ampere-Hour meter block and its vendor identifier."},{"sourceId":"ieee-315","relevance":"Graphic-symbol standards context and official status; not a source of reproduced artwork."}],"related":["ampere-hour-meter","ansi-current-measuring-shunt","ansi-ammeter"],"artwork":"s28-ansi-ampere-hour-meter","publishedOn":"2026-10-28","updatedOn":"2026-10-28","provenance":"independent-public-research","symbolVariant":{"convention":"IEEE / ANSI","form":"Autodesk IEEE-oriented Instrumentation and Sensors form: Ampere-Hour meter","counterpart":"ampere-hour-meter","reference":"Autodesk publishes this block under its IEEE Symbol Preview. The counterpart is the matching functional concept in the library; no equivalence of every detailed standard graphic is asserted."},"plainEnglish":{"title":"What does ANSI/IEEE ampere-hour meter mean?","introduction":"An ampere-hour meter integrates current over time and is most often drawn in DC battery, charger and electrochemical supply circuits. It is normally fed from a shunt, so the schematic should show the shunt, its millivolt rating and the polarity of the sensing leads alongside the meter.","example":"The symbol does not say whether the register counts charge in one direction only or nets charge and discharge. Battery state-of-charge estimation depends on that setting and on efficiency correction, neither of which is visible from the instrument form.","drawings":"Find the shunt or sensor that supplies the current signal. Confirm whether the register is unidirectional or bidirectional. An ampere-hour meter accumulates charge; an ammeter shows instantaneous current and a kWh meter accumulates energy.","terms":[{"name":"DC","meaning":"Direct current: electricity flowing in one direction."},{"name":"Rating","meaning":"A value stating the conditions for which equipment is specified."},{"name":"Schematic","meaning":"A drawing showing function and connections rather than physical appearance."}],"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":"Autodesk IEEE Symbol Preview — Instrumentation and Sensors","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F44D5059-4728-40BD-B9BA-0DE7CFDFAACF.htm"},{"label":"IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams","url":"https://standards.ieee.org/ieee/315/515/"}],"detail":"IEEE-library ampere-hour meter form for integrating charge in DC circuits such as battery and plating supplies. An ampere-hour meter accumulates charge; an ammeter shows instantaneous current and a kWh meter accumulates energy.","profileId":"reviewed-symbol-20261028"},"url":"https://eloragrid.ai/symbols/ansi-ampere-hour-meter","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/ansi-ampere-hour-meter.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"ansi-autodesk-f44d5059-4728-40bd-b9ba-0de7cfdfaacf","title":"Autodesk IEEE Symbol Preview — Instrumentation and Sensors","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F44D5059-4728-40BD-B9BA-0DE7CFDFAACF.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 Instrumentation and Sensors preview listing the Ampere-Hour meter block and its vendor identifier."},{"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":"Graphic-symbol standards context and official status; not a source of reproduced artwork."}]}