EV & Battery Manufacturing worked example

Battery Thermal Test Throughput at 59% thermal test efficiency: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop thermal test efficiency to 59%, then walk the calculation through step by step. Calculate effective thermal test throughput from completed tests, chamber runtime, and test efficiency.

The inputs for this scenario

  • Completed thermal tests: 72 tests (held at the documented default)
  • Thermal chamber runtime: 24 hr (held at the documented default)
  • Thermal test efficiency: 59 % (the input this scenario stresses; the baseline uses 82)

Working through the calculation

  • The calculation starts from the formula this tool documents: Raw chamber throughput = completed thermal tests รท thermal chamber runtime.
  • Effective thermal test throughput works out to 1.77 tests / hr at these inputs, and this is the headline figure for the scenario.
  • Raw chamber throughput works out to 3 tests / hr at these inputs.
  • Thermal test efficiency works out to 59 % at these inputs.
  • Thermal chamber runtime works out to 24 hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where thermal test efficiency sits at 82% and the headline result is 2.46 tests / hr, this scenario comes in 28.05% below the baseline at 1.77 tests / hr.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to thermal test efficiency, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. Efficiency is a single blended figure, so a chamber running mixed test profiles with very different soak times will need separate calculations per profile to be accurate.

Results at a glance

  • Effective thermal test throughput: 1.77 tests / hr (headline result)
  • Raw chamber throughput: 3 tests / hr
  • Thermal test efficiency: 59 %
  • Thermal chamber runtime: 24 hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Battery Thermal Test Throughput calculator, set thermal test efficiency to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.