# ANSI/IEEE ampere-hour meter symbol

Canonical URL: https://eloragrid.ai/symbols/ansi-ampere-hour-meter
Publisher: Elora Grid
Updated: 2026-10-28
Lookup label: Ah
Drawing use: Schematic, SLD
Reference families: IEEE / ANSI, Manufacturer

## Symbol convention

Convention: IEEE / ANSI
Form: Autodesk IEEE-oriented Instrumentation and Sensors form: Ampere-Hour meter
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.
Related representation: [Ampere-hour meter](https://eloragrid.ai/symbols/ampere-hour-meter)

IEEE-library ampere-hour meter form for integrating charge in DC circuits such as battery and plating supplies.

## In plain English

### What does ANSI/IEEE ampere-hour meter mean?

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.

### A simple 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.

### What the drawings help you do

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.

### This particular reference

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.

### Terms

- DC: Direct current: electricity flowing in one direction.
- Rating: A value stating the conditions for which equipment is specified.
- Schematic: A drawing showing function and connections rather than physical appearance.

Concept diagram: Identify the device and form → Read the connections and state → Check the equipment reference
A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.

- [Autodesk IEEE Symbol Preview — Instrumentation and Sensors](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F44D5059-4728-40BD-B9BA-0DE7CFDFAACF.htm)
- [IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams](https://standards.ieee.org/ieee/315/515/)


## What it represents

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.

## How to read it

- Find the shunt or sensor that supplies the current signal.
- Confirm whether the register is unidirectional or bidirectional.

## Information to show or reference

- Reference the shunt rating
- Show sensing polarity
- State register direction

## Important distinction

An ampere-hour meter accumulates charge; an ammeter shows instantaneous current and a kWh meter accumulates energy.

## Facts

- Convention evidence: Autodesk IEEE Symbol Preview, Instrumentation and Sensors
- Public vendor block name: HIN1AHM / VIN1AHM (Autodesk identifier; not an IEEE symbol number)
- Typical circuit: DC battery or charger circuit with a measuring shunt
- Artwork scope: Original functional illustration; exact standard glyph and compliance are not certified

## Public references

- [Autodesk IEEE Symbol Preview — Instrumentation and Sensors](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F44D5059-4728-40BD-B9BA-0DE7CFDFAACF.htm) — Autodesk. Public IEEE-oriented Instrumentation and Sensors preview listing the Ampere-Hour meter block and its vendor identifier.
- [IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams](https://standards.ieee.org/ieee/315/515/) — IEEE Standards Association. Graphic-symbol standards context and official status; not a source of reproduced artwork.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.