BAT
Battery
An electrochemical electrical source or storage element represented in a circuit.
SLD / Schematic
Symbols · SoC
Battery fuel gauge
In plain English
What does Battery fuel gauge mean?
A battery fuel gauge estimates how much usable charge remains in a battery.
A simple example
An operator display can show a charge estimate instead of only battery voltage.
What the drawings help you do
Show the measurements entering the gauge and the charge estimate sent to the controller. A fuel gauge is like a battery dashboard: its estimate depends on the battery model and measurements, rather than simply reading the voltage once. Keep the measurement path separate from the battery’s main power cables.
- State of charge
- An estimate of the charge remaining compared with the battery’s usable charge capacity.
- Fuel gauge
- Electronics and an estimation method that report battery status.
Before using this reference
- Identify the battery chemistry and pack arrangement.
- Label measured voltage, current and temperature where used.
- Name the reported estimate and the controller receiving it.
Does 50% charge mean half the operating time is left?
Not necessarily. The load, temperature, battery condition and the gauge’s estimation method affect operating time. State of charge is an estimate of charge remaining, not a promise about runtime.
Read the source: Battery management functions
Schematic · SoC
A distinction that matters
An estimate of remaining charge is different from a guarantee of remaining operating time.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Battery management functions
Battery management functions: public technical context for the named function. Product and compliance details remain with the publisher.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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Schematic
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Power converter / inverter
An identified interface converting electrical power between documented circuit forms.
SLD / Schematic
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