Graphite, Anode & Battery Materials Processing worked example

Inventory Coverage with daily material usage of 2,100 kg / day: a worked example in graphite, anode & battery materials processing

What does the result look like when daily material usage reaches 2,100 kg / day? The full calculation is worked below with real intermediate numbers. Use it when procurement, planning, or operations needs to protect production against long-lead feedstock, qualified supplier limits, import delays, quality holds, or customer ramp demand.

The inputs for this scenario

  • Daily material usage: 2,100 kg / day (raised for this scenario; the documented default is 850)
  • Qualified replenishment lead time: 45 days (unchanged)
  • Safety stock reserve: 7,500 kg (unchanged)

Working through the calculation

  • Applying the documented formula (Inventory cycle stock = daily material usage × qualified replenishment lead time) to the inputs above produces each figure below.
  • At this operating point the engine returns 0.01 kg for protected days of supply, the number this scenario is built around.
  • At this operating point the engine returns 46.67 days for unprotected days.
  • At this operating point the engine returns 2,100 pieces for inventory.
  • At this operating point the engine returns 45 pieces / day for daily usage.

How this compares with the baseline

  • Against the tool's baseline example, where daily material usage sits at 850 kg / day and the headline result is 0 kg, this scenario comes in 147% above the baseline at 0.01 kg.
  • A figure at this level is achievable when daily material usage is genuinely sustained, not just peaked for a shift. It uses a flat safety stock you supply rather than deriving it statistically, so it does not size the buffer against actual demand variability.

Results at a glance

  • Protected days of supply: 0.01 kg (headline result)
  • Unprotected days: 46.67 days
  • Inventory: 2,100 pieces
  • Daily usage: 45 pieces / day

Run it with your numbers

  • Every input above is editable in the live Inventory Coverage calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.