Producer Price Index for battery manufacturing.
Paste straight into Excel, Google Sheets or an email. Spreadsheet format lands as two columns.
| Month | Value | Change m/m |
|---|---|---|
| Sep 2026 | −0.4% | |
| Aug 2026 | +0.1% | |
| Jul 2026 | +0.3% | |
| Jun 2026 | +0.0% | |
| May 2026 | −0.0% | |
| Apr 2026 | +0.0% | |
| Mar 2026 | +0.3% | |
| Feb 2026 | −0.0% | |
| Jan 2026 | +0.3% | |
| Dec 2025 | +0.1% | |
| Nov 2025 | −0.0% | |
| Oct 2025 | +0.0% | |
| Sep 2025 | +0.9% |
Same numbers as the chart, straight from BLS. Dates are the first of each period, the way BLS reports them.
Batteries rose 0.6% over the last 12 months, but all of its main inputs rose faster: copper and copper products +43.4%, sulfuric acid +42.0%. That cost pressure may still pass through to prices.
Electrical equipment and appliance mfgOther electrical equipment & component mfgStorage battery mfg
A starting point citing this series by name and code. Replace the bracketed terms with your contract's actual scope before use.
The [affected portion] of the Contract Price shall be adjusted using US PPI — Battery Manufacturing (BLS series PCU335910335910), published by BLS. Base Period: the index value published for September 2026 (or the month of contract signing, if different) is the Base Value. Adjustment: at each Adjustment Date, the Current Value is the most recently published three-month average of the index (the Averaging Window). The Escalation Factor equals Current Value divided by Base Value. Cap: the Escalation Factor applied under this clause shall not exceed 1.10 or fall below 0.90 (a 10% cap and floor) in any single Adjustment Date, regardless of the index's actual movement. [Replace bracketed terms with your contract's actual affected-portion definition and adjustment-date schedule before use. This is a drafting starting point, not legal advice.]
Covers finished battery packs and cells broadly. For EV or grid-scale battery-metal exposure specifically, pair with a lithium or nickel index rather than relying on this alone.
Split chips from the equipment that makes them. Chip prices index to BLS PCU334413334413, which has trended down over the last decade. Fab equipment indexes to PCU333242333242, which has trended up. A shared index will misprice one side.
Unlike steel or aluminum, lithium and battery metals have no single official government price index. Clauses instead reference a named private benchmark (commonly a Fastmarkets or Benchmark Mineral Intelligence lithium carbonate assessment, or an exchange settlement price) with the USGS annual average as a lower-frequency audit backstop. The ratio-and-adjustment mechanics are the same as any other escalation clause; naming the exact benchmark provider and price basis matters even more here.
Escalake tracks US PPI — Battery Manufacturing, applies your formula, and gives both sides a number they can confirm, no spreadsheet required.