EV & Battery Manufacturing worked example

EV Final Assembly Line Capacity at 63% final assembly uptime: a worked example

Suppose final assembly uptime falls to 63%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate usable EV final assembly output from vehicles per cycle, cycles available, uptime, and first-pass yield.

The inputs for this scenario

  • Vehicles completed per line cycle: 1 vehicles/cycle (held at the documented default)
  • Available final assembly cycles: 520 cycles (held at the documented default)
  • Final assembly uptime: 63 % (the input this scenario stresses; the baseline uses 88)
  • Vehicle first-pass yield: 94 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross scheduled vehicle capacity = vehicles per line cycle × available final assembly cycles.
  • Good EV line capacity works out to 308 vehicles at these inputs, and this is the headline figure for the scenario.
  • Gross scheduled vehicle capacity works out to 520 vehicles at these inputs.
  • Vehicles lost to downtime works out to 192 vehicles at these inputs.
  • Vehicles lost to first-pass defects works out to 19.66 vehicles at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where final assembly uptime sits at 88% and the headline result is 430 vehicles, this scenario comes in 28.41% below the baseline at 308 vehicles.
  • It computes good (shippable) EV line capacity by derating gross scheduled vehicle output for assembly uptime and first-pass yield. 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

  • Good EV line capacity: 308 vehicles (headline result)
  • Gross scheduled vehicle capacity: 520 vehicles
  • Vehicles lost to downtime: 192 vehicles
  • Vehicles lost to first-pass defects: 19.66 vehicles

Run it with your numbers

  • To rerun this with your own numbers, open the live EV Final Assembly Line Capacity calculator, set final assembly uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.