EV Charging Infrastructure Manufacturing calculator
Rework Cost Calculator
Rework Cost quantifies the cost of correcting charger defects found during assembly, final test, burn-in, or customer inspection. It covers labor, replacement parts, retest time, and engineering or containment support.
What this calculator does
- Estimate EV charger rework cost from affected units, labor/material cost per rework, occurrence share, and fixed support adders.
- a quality manager needs to quantify charger rework impact from a defect or build issue
- It estimates the cost impact of charger rework.
Formula used
- Variable rework cost = reworked units × rework cost per unit × assigned occurrence share
- Total rework cost = variable rework cost + engineering and containment adders
Inputs explained
- Chargers or modules requiring rework: Count chargers, ports, power modules, cables, enclosures, or controllers requiring rework in the lot or period.
- Rework labor and material cost per unit: Include technician labor, replacement components, consumables, retest time, and scrap generated by rework.
- Rework occurrence share assigned: Use 100% for the full rework population, or allocate a share to a specific defect, supplier, or design issue.
- Fixed engineering and containment adders: Add MRB time, engineering investigation, containment sorting, extra fixtures, documentation, and customer reporting cost.
How to use the result
- Use it while quoting chargers, planning assembly cells, sizing test stations, reviewing site load assumptions, buying high-value electrical components, setting warranty reserves, or preparing production ramp reviews.
- This is a planning estimate. Confirm final electrical, manufacturing, installation, safety, listing, and commercial decisions against released drawings, BOMs, routings, test procedures, utility requirements, supplier quotes, and applicable codes or certification requirements.
Common questions
- What is the Rework Cost calculator for? It estimates the cost impact of charger rework.
- What information do I need before using it? You need affected units, cost per rework, assigned share, and fixed support adders.
- How should I use the result? Use it to prioritize corrective action, decide whether to rework or scrap, and update quote or warranty assumptions.
- When is the result only an estimate? It is only an estimate when charger ratings, port counts, cable lengths, test times, thermal assumptions, yield, rework, supplier prices, site utilization, or warranty rates come from early design assumptions instead of current production records, validated test data, supplier quotes, and field history.
Last reviewed 2026-05-12.