EV connector compatibility inventory calculator

Calculate compatible vehicle assignments and unassigned vehicles with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use compatible vehicle assignments and unassigned vehicles to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Allowed zero-based port indices for each vehicle; enter JSON
[[0],[0,1],[1]]
Available ports by listed type (counts)
1,1
Compatible vehicle assignments (JSON)
[1,2,null]
Unassigned vehicles (count)
1

Try another scenario

Allowed zero-based port indices for each vehicle; enter JSON
[[0],[0],[1]]
Available ports by listed type (counts)
2,1
Compatible vehicle assignments (JSON)
[1,1,2]
Unassigned vehicles (count)
0
Calculation method

Calculation method

Compatible vehicle assignments (JSON)

Maximum-cardinality bipartite matching with type count expanded into slots; output type indices are one-based.

Unassigned vehicles (count)

Count null assignments.

Symbols and units
a
Allowed zero-based port indices for each vehicle; enter JSON
b
Available ports by listed type (counts)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Supplied compatibility includes only user-approved adapters; no connector compatibility database. Supported limits: All numeric inputs and computed intermediates must remain finite. Supported numeric input magnitude is zero or 1e-12 through 1e12 in absolute value; reject values outside this bounded range. All lists/JSON record tables are limited to 100 records unless a stricter bound is stated; reject malformed record arity and wrong member types. At most 50 vehicles, 20 types, 100 total ports; allowed indices must exist; integer counts >=0.
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