EV & Battery Manufacturing calculator
EV End-of-Line Test Yield Calculator
End-of-line test yield shows whether assembled products are clearing functional, software, electrical, and safety checks without repair. This calculator helps quality and production teams quantify the EOL pass rate and gap to target.
What this calculator does
- Calculate first-pass EOL test yield for vehicles, packs, modules, or power electronics.
- an EV assembly, battery pack, inverter, or charger line needs to track first-pass EOL test performance
- Returns first-pass EOL test yield for the selected product and test gate.
Formula used
- EOL first-pass yield = units passing EOL first time รท total units EOL tested
- EOL yield gap to target = target EOL yield - calculated yield
Inputs explained
- Units passing EOL first time: Count vehicles, packs, modules, or electronics that pass without repair or retest.
- Total units EOL tested: Use the matching tested population for the same line and period.
- Target EOL first-pass yield: Use the production KPI or launch target for this product.
How to use the result
- Use it for launch quality reviews, repair bay staffing, software flash checks, and shipment readiness.
- It does not identify which EOL station failed; pair with failure Pareto, retest rates, and repair-loop data.
Common questions
- Should retest passes count? Not for first-pass yield. Track retest recovery separately if needed.
- Can this be used for vehicles and packs? Yes, as long as the pass count and total tested count are from the same product and EOL gate.
- What does the target gap show? It shows how many percentage points the EOL process is below or above the target.
- How can I use the result? Use it to size repair loops, prioritize EOL defect reduction, and protect shipment commitments.
Last reviewed 2026-05-12.