Advanced Total Voltage Calculator

Analyze voltage sources, battery packs, and balanced phases. Get fast totals, checks, graphs, and exports. Built for accurate planning, testing, teaching, and reporting needs.

Calculator Inputs

Choose a mode, enter values, and press calculate. Results appear above this form, directly below the header section.

Series Source Inputs

Source 1

Source 2

Source 3

Source 4

Source 5

Source 6

Battery Pack Inputs

Three-Phase from Line-Neutral

Three-Phase from Line-Line

Example Data Table

Scenario Mode Inputs Expected Result
Two 12 V batteries with one 1.5 V opposing source Series source total 12×2 aiding, 1.5×1 opposing, 0 V drop 22.50 V
12S lithium pack Battery pack voltage 3.7 V nominal, 12 series, 2 parallel, 0.4 V drop 44.00 V
Balanced three-phase conversion Three-phase from line-neutral 230 V line-neutral, 0 V drop 398.37 V line-line
Balanced three-phase reverse conversion Three-phase from line-line 400 V line-line, 0 V drop 230.94 V line-neutral

Formula Used

1) Series Source Total

Vtotal = Σ(Vi × Quantity × Sign) − Vdrop

Use sign = +1 for aiding polarity and sign = −1 for opposing polarity.

2) Battery Pack Voltage

Vpack = (Vcell × Cells in series) − Vdrop

Parallel strings affect capacity, not voltage, in this simplified model.

3) Three-Phase from Line-Neutral

VLL = (√3 × VLN) − Vdrop

This assumes a balanced three-phase system.

4) Three-Phase from Line-Line

VLN = (VLL ÷ √3) − Vdrop

This also assumes a balanced three-phase system.

5) Expected Voltage Range

Vmin = V × (1 − t)

Vmax = V × (1 + t)

Where t = tolerance percentage ÷ 100.

How to Use This Calculator

  1. Select the correct calculation mode for your circuit or power system.
  2. Enter the common settings first: tolerance, system drop, and preferred decimal places.
  3. Fill in the inputs for the chosen mode only.
  4. For series calculations, use aiding or opposing polarity for each source.
  5. For battery packs, enter cell values and series count. Parallel strings remain informative.
  6. For three-phase work, choose whether your known value is line-neutral or line-line.
  7. Press Calculate Total Voltage to show the result above the form.
  8. Review the summary table, breakdown, and Plotly graph.
  9. Use the CSV or PDF buttons to export the result for reports or documentation.

Frequently Asked Questions

1) What does total voltage mean?

Total voltage is the final combined electrical potential after adding, converting, or subtracting the selected inputs for the chosen circuit model.

2) When should I use opposing polarity?

Use opposing polarity when a source is connected against the main direction, so its voltage subtracts from the overall series total.

3) Do parallel battery strings increase voltage?

No. Parallel strings mainly increase available current and capacity. Series cell count determines pack voltage in this calculator.

4) Why is square root of three used?

Balanced three-phase systems have a fixed relationship between line-line and line-neutral voltages. That ratio is √3.

5) What is system drop?

System drop represents known voltage losses from cables, connectors, protection devices, or controllers that reduce the net available voltage.

6) What does the tolerance range show?

It shows a simple expected voltage band around the primary result using your selected percentage tolerance.

7) Can I use AC and DC values here?

Yes, but use values consistently. The series and battery modes often fit DC work, while three-phase modes fit balanced AC systems.

8) Why export the results?

Exports help with documentation, testing records, maintenance reports, quotations, classroom examples, and client communication.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.