EV Charging Infrastructure Manufacturing worked example

Rework Cost at 72% rework occurrence share assigned: a worked example in ev charging infrastructure manufacturing

Suppose rework occurrence share assigned falls to 72%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate EV charger rework cost from affected units, labor/material cost per rework, occurrence share, and fixed support adders.

The inputs for this scenario

  • Chargers or modules requiring rework: 64 units (held at the documented default)
  • Rework labor and material cost per unit: 145 $ / unit (held at the documented default)
  • Rework occurrence share assigned: 72 % (the input this scenario stresses; the baseline uses 100)
  • Fixed engineering and containment adders: 2,400 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Variable rework cost = reworked units × rework cost per unit × assigned occurrence share.
  • Total EV charger rework cost works out to 9,082 $ at these inputs, and this is the headline figure for the scenario.
  • Rework cost per affected unit works out to 142 $ / unit at these inputs.
  • Variable rework cost works out to 6,682 $ at these inputs.
  • Engineering and containment adders works out to 2,400 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where rework occurrence share assigned sits at 100% and the headline result is 11,680 $, this scenario comes in 22.25% below the baseline at 9,082 $.
  • It computes the total cost of reworking failed EV charger units by combining a per-unit variable cost across the affected units, weighted by an assigned occurrence share, plus fixed engineering and containment adders. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Total EV charger rework cost: 9,082 $ (headline result)
  • Rework cost per affected unit: 142 $ / unit
  • Variable rework cost: 6,682 $
  • Engineering and containment adders: 2,400 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Rework Cost calculator, set rework occurrence share assigned to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.