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Side-by-side financial comparison of Amprius Technologies, Inc. (AMPX) and EnerSys (ENS). Click either name above to swap in a different company.
EnerSys is the larger business by last-quarter revenue ($919.1M vs $25.2M, roughly 36.4× Amprius Technologies, Inc.). EnerSys runs the higher net margin — 9.8% vs -96.7%, a 106.5% gap on every dollar of revenue. On growth, Amprius Technologies, Inc. posted the faster year-over-year revenue change (137.4% vs 1.4%). EnerSys produced more free cash flow last quarter ($171.3M vs $-5.9M). Over the past eight quarters, Amprius Technologies, Inc.'s revenue compounded faster (228.7% CAGR vs 0.5%).
Amprius Technologies, Inc. develops and manufactures high-energy density lithium-ion batteries using proprietary silicon anode technology. It serves aerospace, defense, electric mobility, and portable electronics segments, offering products with longer runtime and faster charging than conventional alternatives.
EnerSys is a stored energy systems and technology provider for industrial applications. The company manufactures reserve-power and motive-power batteries, battery chargers, power equipment, battery accessories and outdoor equipment enclosures.
AMPX vs ENS — Head-to-Head
Income Statement — Q4 2025 vs Q3 2026
| Metric | | |
|---|---|---|
| Revenue | $25.2M | $919.1M |
| Net Profit | $-24.4M | $90.4M |
| Gross Margin | 23.6% | 30.1% |
| Operating Margin | -100.9% | 13.5% |
| Net Margin | -96.7% | 9.8% |
| Revenue YoY | 137.4% | 1.4% |
| Net Profit YoY | -113.6% | -21.3% |
| EPS (diluted) | $-0.19 | $2.40 |
Green = leading value per metric. Periods may differ when fiscal calendars don't align.
8-Quarter Revenue & Profit Trend
Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.
| Q4 25 | $25.2M | $919.1M | ||
| Q3 25 | $21.4M | $951.3M | ||
| Q2 25 | $15.1M | $893.0M | ||
| Q1 25 | $11.3M | $974.8M | ||
| Q4 24 | $10.6M | $906.2M | ||
| Q3 24 | $7.9M | $883.7M | ||
| Q2 24 | $3.3M | $852.9M | ||
| Q1 24 | $2.3M | $910.7M |
| Q4 25 | $-24.4M | $90.4M | ||
| Q3 25 | $-3.9M | $68.4M | ||
| Q2 25 | $-6.4M | $57.5M | ||
| Q1 25 | $-9.4M | $96.5M | ||
| Q4 24 | $-11.4M | $114.8M | ||
| Q3 24 | $-10.8M | $82.3M | ||
| Q2 24 | $-12.5M | $70.1M | ||
| Q1 24 | $-9.9M | $60.9M |
| Q4 25 | 23.6% | 30.1% | ||
| Q3 25 | 15.5% | 29.1% | ||
| Q2 25 | 8.9% | 28.4% | ||
| Q1 25 | -20.9% | 31.2% | ||
| Q4 24 | -21.2% | 32.9% | ||
| Q3 24 | -64.9% | 28.5% | ||
| Q2 24 | -195.2% | 27.9% | ||
| Q1 24 | -190.3% | 27.9% |
| Q4 25 | -100.9% | 13.5% | ||
| Q3 25 | -21.9% | 9.7% | ||
| Q2 25 | -45.2% | 9.7% | ||
| Q1 25 | -85.7% | 13.5% | ||
| Q4 24 | -110.6% | 15.7% | ||
| Q3 24 | -143.3% | 11.2% | ||
| Q2 24 | -386.6% | 10.7% | ||
| Q1 24 | -441.7% | 8.9% |
| Q4 25 | -96.7% | 9.8% | ||
| Q3 25 | -18.2% | 7.2% | ||
| Q2 25 | -42.3% | 6.4% | ||
| Q1 25 | -83.0% | 9.9% | ||
| Q4 24 | -107.4% | 12.7% | ||
| Q3 24 | -138.1% | 9.3% | ||
| Q2 24 | -374.2% | 8.2% | ||
| Q1 24 | -423.2% | 6.7% |
| Q4 25 | $-0.19 | $2.40 | ||
| Q3 25 | $-0.03 | $1.80 | ||
| Q2 25 | $-0.05 | $1.46 | ||
| Q1 25 | $-0.08 | $2.39 | ||
| Q4 24 | $-0.11 | $2.88 | ||
| Q3 24 | $-0.10 | $2.01 | ||
| Q2 24 | $-0.13 | $1.71 | ||
| Q1 24 | $-0.11 | $1.48 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $90.5M | $450.1M |
| Total DebtLower is stronger | — | — |
| Stockholders' EquityBook value | $103.8M | $1.9B |
| Total Assets | $156.9M | $4.0B |
| Debt / EquityLower = less leverage | — | — |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $90.5M | $450.1M | ||
| Q3 25 | $73.2M | $388.6M | ||
| Q2 25 | $54.2M | $346.7M | ||
| Q1 25 | $48.4M | $343.1M | ||
| Q4 24 | $55.2M | $463.2M | ||
| Q3 24 | $35.0M | $407.9M | ||
| Q2 24 | $46.4M | $344.1M | ||
| Q1 24 | $39.0M | $333.3M |
| Q4 25 | — | — | ||
| Q3 25 | — | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | $1.1B | ||
| Q4 24 | — | — | ||
| Q3 24 | — | — | ||
| Q2 24 | — | — | ||
| Q1 24 | — | $802.0M |
| Q4 25 | $103.8M | $1.9B | ||
| Q3 25 | $103.2M | $1.9B | ||
| Q2 25 | $76.7M | $1.9B | ||
| Q1 25 | $70.4M | $1.9B | ||
| Q4 24 | $69.5M | $1.8B | ||
| Q3 24 | $56.0M | $1.8B | ||
| Q2 24 | $65.1M | $1.8B | ||
| Q1 24 | $59.9M | $1.8B |
| Q4 25 | $156.9M | $4.0B | ||
| Q3 25 | $156.5M | $4.1B | ||
| Q2 25 | $123.0M | $4.1B | ||
| Q1 25 | $118.5M | $4.0B | ||
| Q4 24 | $121.1M | $4.0B | ||
| Q3 24 | $104.2M | $4.0B | ||
| Q2 24 | $112.8M | $3.6B | ||
| Q1 24 | $104.7M | $3.5B |
| Q4 25 | — | — | ||
| Q3 25 | — | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | 0.57× | ||
| Q4 24 | — | — | ||
| Q3 24 | — | — | ||
| Q2 24 | — | — | ||
| Q1 24 | — | 0.46× |
Cash Flow & Capital Efficiency
How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.
| Metric | | |
|---|---|---|
| Operating Cash FlowLast quarter | $-3.5M | $184.6M |
| Free Cash FlowOCF − Capex | $-5.9M | $171.3M |
| FCF MarginFCF / Revenue | -23.2% | 18.6% |
| Capex IntensityCapex / Revenue | 9.3% | 1.4% |
| Cash ConversionOCF / Net Profit | — | 2.04× |
| TTM Free Cash FlowTrailing 4 quarters | $-35.5M | $441.3M |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $-3.5M | $184.6M | ||
| Q3 25 | $-9.2M | $218.0M | ||
| Q2 25 | $-4.3M | $968.0K | ||
| Q1 25 | $-14.1M | $135.2M | ||
| Q4 24 | $-6.1M | $81.1M | ||
| Q3 24 | $-9.5M | $33.6M | ||
| Q2 24 | $-8.0M | $10.4M | ||
| Q1 24 | $-9.8M | — |
| Q4 25 | $-5.9M | $171.3M | ||
| Q3 25 | $-9.7M | $197.1M | ||
| Q2 25 | $-5.0M | $-32.1M | ||
| Q1 25 | $-15.0M | $104.9M | ||
| Q4 24 | $-9.7M | $56.8M | ||
| Q3 24 | $-10.9M | $3.3M | ||
| Q2 24 | $-9.6M | $-25.7M | ||
| Q1 24 | $-13.7M | — |
| Q4 25 | -23.2% | 18.6% | ||
| Q3 25 | -45.1% | 20.7% | ||
| Q2 25 | -33.1% | -3.6% | ||
| Q1 25 | -133.3% | 10.8% | ||
| Q4 24 | -91.4% | 6.3% | ||
| Q3 24 | -138.3% | 0.4% | ||
| Q2 24 | -285.9% | -3.0% | ||
| Q1 24 | -585.4% | — |
| Q4 25 | 9.3% | 1.4% | ||
| Q3 25 | 1.9% | 2.2% | ||
| Q2 25 | 4.8% | 3.7% | ||
| Q1 25 | 8.1% | 3.1% | ||
| Q4 24 | 34.1% | 2.7% | ||
| Q3 24 | 17.0% | 3.4% | ||
| Q2 24 | 48.0% | 4.2% | ||
| Q1 24 | 166.8% | — |
| Q4 25 | — | 2.04× | ||
| Q3 25 | — | 3.19× | ||
| Q2 25 | — | 0.02× | ||
| Q1 25 | — | 1.40× | ||
| Q4 24 | — | 0.71× | ||
| Q3 24 | — | 0.41× | ||
| Q2 24 | — | 0.15× | ||
| Q1 24 | — | — |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
AMPX
Segment breakdown not available.
ENS
| Energy Systems | $399.5M | 43% |
| Motive Power | $352.0M | 38% |
| Services | $92.6M | 10% |
| Transferred Over Time | $38.2M | 4% |
| Other | $36.8M | 4% |
