Cathode Active Material & Precursor Manufacturing worked example

Inventory Coverage with usable battery-material inventory on hand of 600 kg: a worked example in cathode active material & precursor manufacturing

Here is what the math looks like when conditions slip. We hold every other input steady and drop usable battery-material inventory on hand to 600 kg, then walk the calculation through step by step. Estimate adjusted days of coverage for CAM, precursor, metal sulfate, lithium source, or dopant inventory using stock on hand, daily demand, and a safety multiplier.

The inputs for this scenario

  • Usable battery-material inventory on hand: 600 kg (the input this scenario stresses; the baseline uses 1,200)
  • Average daily material demand: 85 kg / day (held at the documented default)
  • Safety coverage multiplier: 1.1 x (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Unadjusted coverage days = usable battery-material inventory on hand รท average daily material demand.
  • Protected days of supply works out to 6.42 days at these inputs, and this is the headline figure for the scenario.
  • Unprotected days works out to 7.06 days at these inputs.
  • Inventory works out to 600 pieces at these inputs.
  • Daily usage works out to 85 pieces / day at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where usable battery-material inventory on hand sits at 1,200 kg and the headline result is 12.83 days, this scenario comes in 50% below the baseline at 6.42 days.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to usable battery-material inventory on hand, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes flat average daily demand; a CAM line with lumpy batch consumption or a demand spike can run out faster than the average-based days suggest.

Results at a glance

  • Protected days of supply: 6.42 days (headline result)
  • Unprotected days: 7.06 days
  • Inventory: 600 pieces
  • Daily usage: 85 pieces / day

Run it with your numbers

  • To rerun this with your own numbers, open the live Inventory Coverage calculator, set usable battery-material inventory on hand to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.