ENS Q4 2025 Earnings Presentation

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May 2025 © 2025 EnerSys. All Rights Reserved. Forward Looking Statements As a reminder, we will be presenting certain forward-looking statements on this call that are based on Management’s current expectations and views regarding future events and operating performance and are subject to uncertainties and changes in circumstances. Our actual results may differ materially from the forward- looking statements for a number of reasons. Our forward-looking statements are applicable only as of the date of this presentation. For a list of the factors which could affect our future results, including our earnings estimates, see forward-looking statements included in “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations,” set forth in our Annual Report on Form 10-K for the fiscal year ended March 31, 2025, and the “Caution Concerning Forward-Looking Statements” section of our press release and 8-K dated May 21, 2025, which was filed with the U.S. Securities and Exchange Commission. In addition, we will also be presenting certain non-GAAP financial measures. For an explanation of the differences between the comparable GAAP financial information and the non-GAAP information, please see our company’s Form 8-K which includes our press release dated May 21, 2025, which is located on our website at www.enersys.com. 2

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May 2025 © 2025 EnerSys. All Rights Reserved. Q4’25 & FY’25 Performance 4 R E C O R D Q 4 ’ 2 5 & F Y ’ 2 5 A D J E P S1 , 2 , 3 E X 4 5 X Q4’25 Adj Gross Margin1,2 of 26.7% ex 45X, +260bps Y/Y; FY’25 25.2% ex 45X, +100bps Y/Y Net Sales $975M +7% Y/Y $3.6B +1% Y/Y Adj Op Earnings 1,2 $152M +40% Y/Y $528M +17% Y/Y Adj EBITDA 1,2 $167M +34% Y/Y $589M +16% Y/Y Adj EPS 1,2 $2.97 +43% Y/Y $10.15 +22% Y/Y Free Cash Flow 1 $105M ($4M) Y/Y $139M ($231M) Y/Y Q4’25FY’25 1 Non-GAAP measure. Please refer to appendix for reconciliation. 2 Excludes $44M of IRC 45X tax credit recorded in Cost of Goods Sold (COGS) in Q4’25, $36M in Q4’24, $185M in FY’25 and $136M in FY’24 3 Q4’25 Adj EPS ex 45X of $1.86 and FY’25 Adj EPS ex 45X of $5.58 +48% Y/Y ex 45X +39% Y/Y ex 45X +9% Y/Y ex 45X +56% Y/Y ex 45X +11% Y/Y ex 45X+9% Y/Y ex 45X

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May 2025 © 2025 EnerSys. All Rights Reserved. New CEO Strategic Priorities 6 • Deep customer relationships • Leading positions in diverse end markets • Solutions that help customers address concerns in: ‒ Energy security: managing costs and consumption ‒ Labor scarcity: increasing efficiency and productivity BUILD UPON ENERSYS’ STRENGTHS • Near-term: Execution and managing through evolving macro challenges • Finalizing strategy roadmap, with updates to come in future quarters: ‒ Focus on select growth verticals ‒ Expand service capabilities ‒ Achieve further operational efficiencies • ROIC discipline FOCUS ARE AS

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May 2025 © 2025 EnerSys. All Rights Reserved. TARIFF EXPOSURE MITIGATI ON & ACTIONS Tariff Landscape & Mitigation 7 Committed to Fully Mitigating any Financial Impact of Tariffs • Dedicated Tariff Task Force in place • Actioning supply chain and pricing mitigations • Proactively assessing and mitigating: ‒ Inflation pressures from tariffs ‒ Market dynamics, including headwinds and opportunities • Structural buffers in place from our longstanding practices ‒ Producing in region for region ‒ Onshoring from China ‒ Dual sourcing ‒ Footprint rationalization 59% 19% 10% 7% 5% ORIGIN OF US SUPPLY SOURCES US MX/CAN EMEA Other China Limited tariff exposure • ~92M current direct tariff exposure • ~65% global revenue is in the US • US supply sourced from: ‒ 78% US or USMCA compliant ‒ 17% countries w/ 10% reciprocal rates ‒ 5% China

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May 2025 © 2025 EnerSys. All Rights Reserved. 640 660 680 700 720 740 760 780 800 820 840 0 20 40 60 80 100 120 Q1'20 Q2'20 Q3'20 Q4'20 Q1'21 Q2'21 Q3'21 Q4'21 FY'21 COVID Impact ($M) Revenue Adj EBITDA FCF Recession Playbook 8 I M PA C T & A C T I O N S TO M I T I G AT E S L O W D O W N LoB Resilience All • ENS has unique pockets of exposure and opportunities Energy Systems • Comms more elastic w/ interest rates than GDP; customers’ CapEx anchored by budgets but inflation pressures volume • Data Centers likely to remain robust Motive Power • Most exposed - trends with GDP but maintenance-free buffers impact • Excellent track record of flexing OpEx Specialty • Trans OEM already soft; recovery to be further delayed • A&D likely to remain robust Playbook Levers P&L: ✓ Dedicated tariff task force ✓ Footprint rationalization (Monterrey) ✓ Price-cost recapture playbook ✓ Closely manage direct and indirect costs ✓ Absorb near-term stranded tariffs Rapid EBITDA recovery track record Cash Flow: ✓ Healthy balance sheet w/ conservative leverage ✓ Preserve P&L ✓ Primary Operating Capital management ✓ Defer non-essential CapEx ✓ Creates compelling buyback opportunities Significant cash inflow track record Key Takeaways: 1. Slowdown not fully evident yet but being proactive against early indicators 2. Successful history of disciplined cost mgmt. & cash generation in recessions 3. Diversified end-markets and global mfg. footprint create competitive advantages 4. A potential recession may look different from past: • If there’s a slowdown, it would likely triggered by inflation from tariffs - Growth slowdown would be result of inflation, not trigger for deflation - Signals may not be visible until higher priced goods work through to consumers - Fed tools (interest rates) may not be as effective due to potential stagflation • Customers carrying less inventory than in past 5. Leadership knows the playbook and is proactively pulling levers

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May 2025 © 2025 EnerSys. All Rights Reserved. SPECIALTYMOTIVE POWERENERGY SYSTEMS Q4’25 Business Segment Performance 9 • Significant Q4 margin expansion • Robust A&D markets strengthened by the macro - demand for chargers, soldier power and expeditionary power systems • Tariff and macro uncertainty have reversed the Class 8 truck recovery expected in FY’26 • Slower Transportation order rates as major OEMs are reducing forecasts • Significant Q4 margin expansion • AI-driven data demand fueling early project work and network expansion investments • Pace of expansion moderated by customers selectively managing CapEx • Order rates improved QoQ, with particular strength in the Americas Data Centers and Communications • Record Q4 AOE margin • Driving price/mix advantage with maintenance-free products • Fluctuating demand signals with tariff uncertainty • Industry forecast expects lift truck shipments flat-to-down for CY’25 with recovery in CY’26

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May 2025 © 2025 EnerSys. All Rights Reserved. S E T T I N G T H E F O U N D AT I O N F O R W H AT ’ S N E X T Operational & Strategic Execution Operational Improvements • New high-speed line in MO online and performing to expectations; second high speed line on track to be operational in the fall • Strengthening footprint and optimizing cost structure with Monterrey, MEX to Richmond, KY production transition – estimated annual savings of $19M beginning in FY’27 Lithium Strategy Execution • Mark Matthews appointed Acting Chief Technology Officer • Reviewing lithium technology roadmap and investment plans • Continuing to engage with DOE and refine plan for domestic lithium cell manufacturing plant Increasing Higher Value Solutions • SynovaTM Sync charger - delivers high efficiency, IoT compatibility for remote monitoring, and over-the-air firmware updates. • BESS for warehouse and distribution centers - tackles power continuity challenges, costly infrastructure upgrades, long lead times, and limited flexibility • Foundation for onsite microgrids - efficiently storing, managing and using energy from the traditional grid and various onsite generation sources 10 PEAK SHAVING ON-SITE RENEWABLES ENERGY MANAGEMENT

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May 2025 © 2025 EnerSys. All Rights Reserved. Q4’25 and FY’25 Results 12 10% YoY Earnings Growth ex 45X on 1% Net Sales Growth 1 Non-GAAP measure. Please refer to appendix for reconciliation. Includes IRC 45X tax credit recorded in Cost of Goods Sold (COGS): $44M in Q4’25, $36M in Q4’24, $185M in FY’25 and $136M in FY’24 Q4'24 Q4'25 Y/Y Change +4% volume +1% price +4% acquisition (2%) FX 15.6% 12.0% NET SALES ADJ OPERATING EARNINGS 1 & MARGIN ADJ EBITDA 1 & MARGIN ADJ DILUTED EPS 1 ($M, except EPS) Q4'24 Q4'25 17.1% 13.7% Q4'24 Q4'25 $911 $975 Q4'24 Q4'25 FY'24 FY'25 FY'24 FY'25 FY'24 FY'25 $3,582 $3,618 FY'24 FY'25 14.6%12.6% 16.3%14.2% $450 $528 $109 $152 $8.35 $10.15 $2.08 $2.97$507 $589 $124 $167 Prior Year 45X Current Year 45X Prior Year Base Current Year Base Y/Y Change Flat volume Flat price +2% acquisition (1%) FX

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May 2025 © 2025 EnerSys. All Rights Reserved. Energy Systems Segment Highlights 13 1 Non-GAAP measure. Please refer to appendix for reconciliation. Continued recovery in end markets, particularly in U.S. Communications, paced by macro uncertainty • Net Sales +8% Y/Y ‒ +8% volume, +2% price / mix, (2%) FX ‒ Data Center revenue +22% Y/Y • Adj Op Earnings1 +$17M Y/Y ‒ Nearly doubled earnings on 8% sales increase with benefits of cost optimization actions Q4’25 ($M) Y/Y change Net Sales $399 +8% Adj Op Earnings1 $34.7 +99% Adj OE Margin1 8.7% +400 bps

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May 2025 © 2025 EnerSys. All Rights Reserved. Motive Power Segment Highlights 14 1 Non-GAAP measure. Please refer to appendix for reconciliation. Customers recalibrating with global macro uncertainty • Net Sales flat Y/Y ‒ +1% price/mix, flat volume, (2%) FX ‒ Maintenance-free products increased to record 29% of sales from 25% in Q4’24 • Adj Op Earnings1 +$8M Y/Y ‒ Strong earnings on continued price/mix favorability from maintenance-free offerings Q4’25 ($M) Y/Y change Net Sales $392 (0.6%) Adj Op Earnings1 $66.5 +14% Adj OE Margin1 17.0% +230 bps

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May 2025 © 2025 EnerSys. All Rights Reserved. Specialty Segment Highlights 15 1 Non-GAAP measure. Please refer to appendix for reconciliation. A&D demand remains robust; Transportation recovery delayed by tariff and macro uncertainty • Net Sales +21% Y/Y and +15% QoQ ‒ +22% acquisition, (2%) price/mix, +1% volume, flat FX ‒ Bren-Tronics outperformance, partially offset by slower Class 8 truck OEM volume recovery • Adj Op Earnings1 +$7M Y/Y ‒ Y/Y increase driven by accretive impact of Bren-Tronics Q4’25 ($M) Y/Y change Net Sales $178 +21% Adj Op Earnings1 $15.1 +79% Adj OE Margin1 8.5% +270 bps

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May 2025 © 2025 EnerSys. All Rights Reserved. 0.7x 2.0x 2.3x 1.7x 2.5x 1.8x 1.0x 1.1x 1.6x 1.5x 1.3x FY'18 FY'19 FY'20 FY'21 FY'22 FY'23 FY'24 Q1'25 Q2'25 Q3'25 Q4'25 ($M) Q4’24 Q4’25 Cash and Cash Equivalents $333 $463 Net Debt3 $511 $781 Net Leverage Ratio3 1.0x 1.3x Primary Operating Capital4 $853 $932 Balance Sheet, Cash Flow and Leverage Strong Balance Sheet Enabling Disciplined Capital Allocation Strategy 1 Balances as of periods ending March 31, 2024, and March 31, 2025 2 Periods ending March 31, 2024, and March 31, 2025 3 Net Debt includes finance lease obligations and letters of credit, net of cash and cash equivalents. Net leverage ratio = Net Debt / Adj EBITDA (per credit agreement). Please refer to appendix for reconciliations. 4 Primary Operating Capital (POC) was formerly referred to as Primary Working Capital (PWC) and is a non-GAAP measure. Free Cash Flow is a non-GAAP measure. Please refer to appendix for reconciliations. SELECTED BALANCE SHEET METRICS 1 ($M) Q4’24 Q4’25 Cash Flow from Operations $137 $135 CapEx ($27) ($30) Free Cash Flow4 $109 $105 SELECTED CASH FLOW METRICS 2 NET LEVERAGE RATIO 3 16 FY’24 FY’25 $457 $260 ($86) ($121) $371 $139

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May 2025 © 2025 EnerSys. All Rights Reserved. Disciplined Capital Allocation Strategy 17 Balancing Innovation and Growth Investments while Returning Capital to Shareholders 17 Priorities Q4’25 Future Priorities Invest in Organic Growth (CapEx) $30M • Continue TPPL capacity investments & end-to-end solutions • Optimize EOS to drive additional operational efficiencies • Accelerate domestic-sourced lithium strategy Strategic M&A Bren-Tronics outperforming expectations • Focused on opportunities to: ➢ Strengthen customer intimacy ➢ Expand wallet share, leveraging leading positions in growing end markets ➢ Progress transformation journey • Ample dry powder for future opportunistic tuck-in acquisitions Net Leverage1 1.3x EBITDA • Target low end of 2x – 3x long-term net leverage range Return of Capital Dividends Buybacks $9.5M $40M • Committed to competitive dividend that grows with earnings over time (excluding IRC 45X funds) • ~$200M outstanding repurchase authorization2 1 Non-GAAP financial measure. Please refer to appendix for reconciliation; Net leverage = Net Debt / Adj EBITDA (per credit agreement) 2 As of May 21, 2025; includes $179 million remaining on stock repurchase authorization and estimated anti-dilution repurchases

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May 2025 © 2025 EnerSys. All Rights Reserved. 1 Q1’26 guidance assumes tariff rates as of May 21, 2025. 2 EnerSys does not provide a quantitative reconciliation for forward-looking statements. Please see our latest Form 8-K which includes our press release dated May 21, 2025, for more details. Looking Ahead: Q1’26 Guidance 18 PA U S I N G Q U A N T I F I E D F U L L Y E A R G U I D A N C E Confidently Navigating Macro Dynamics, Committed to Delivering Strong Earnings Performance Q1’26 GUIDANCE 1 Net Sales $830M – $870M IRC 45X Benefit to Gross Profit $35M – $40M Adj. EPS2 $2.03 – $2.13 ASSUMPTIONS Q1’26 • ES: strong Data Center market and continued cautious Communications market recovery • MP: seasonality exacerbated by tariff disruptions, continued maintenance-free conversion • SP: seasonality for Transportation market exacerbated by tariff disruptions, offset by robust A&D • Absorbing ~$5M of stranded tariffs FY’26 • Q1’26 expected to mark low point of the year • Adj. OE growth ex 45X to outpace revenue growth • ES: Robust data center market and gradual improvements in Communications market • MP: Customer enthusiasm for maintenance-free offerings • SP: Robust A&D, ongoing improvement in Transportation market

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May 2025 © 2025 EnerSys. All Rights Reserved. Progress Toward FY’27 Targets 19 E P S A N D O P E R AT I O N A L G O A L S R E M A I N A C H I E VA B L E FY’27 Targets 8% – 10% CAGR3 14% – 16% $850M – 950M $11.00 – $13.00 FY’23 Actual Net Sales $3.7B Adj. Operating Margin1 8.7% Adj. EBITDA1 $388M Adj. EPS1 $5.34 + Maintenance-free conversion + TPPL capacity flexibility + ES business optimization actions + Accretive Bren-Tronics acquisition + Excess capital reinvestment + Expanded IRC 45X benefit - Sales CAGRs lagging long-term potential on macro dynamics FY’25 Actual $3.6B ~(1%) CAGR2 14.6% $589M $10.15 1 EnerSys does not provide a quantitative reconciliation for forward-looking statements. Please see our latest Form 8-K which includes our press release dated May 21, 2025, for more details. 2 Two-year CAGR vs. FY’23 3 Four-year CAGR vs. FY’23 PERFORMANCE VS INVESTOR DAY TARGETS

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May 2025 © 2025 EnerSys. All Rights Reserved. Non-GAAP Reconciliation 27 Q U A R T E R LY A D J U S T E D D I L U T E D E P S C O N T I N U E D The following table provides the line of business allocation of the non-GAAP adjustments of items relating to operating earnings (that are allocated to lines of business) shown in the reconciliation prior:

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May 2025 © 2025 EnerSys. All Rights Reserved. Non-GAAP Reconciliation 29 F U L L Y E A R A D J U S T E D D I L U T E D E P S C O N T I N U E D The following table provides the line of business allocation of the non-GAAP adjustments of items relating to operating earnings (that are allocated to lines of business) shown in the reconciliation prior:

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May 2025 © 2025 EnerSys. All Rights Reserved. Non-GAAP Reconciliation 30 L E V E R A G E R AT I O B Y Y E A R (1) The $85.8 million adjustment to EBITDA in the last twelve months ending March 31, 2024 primarily related to $30.6 million of non-cash stock compensation, $40.7 million of restructuring and other exit charges, impairment of indefinite-lived intangibles and write-down of other current assets of $13.6 million. The $51.7 million adjustment to EBITDA in fiscal 2023 primarily related to $26.4 million of non-cash stock compensation, $22.4 million of restructuring and other exit charges, impairment of indefinite-lived intangibles of $0.5 million, and $1.4 million for swap termination fees. The $51.5 million adjustment to EBITDA in fiscal 2022 primarily related to $24.3 million of non-cash stock compensation, $26.0 million of restructuring and other exit charges, indefinite-lived intangibles of $1.2 million. The $56.3 million adjustment to EBITDA in fiscal 2021 primarily related to $19.8 million of non-cash stock compensation, $33.2 million of restructuring and other exit charges, business integration costs of $7.3 million, partially offset by $3.9 million of gain ($4.4 million gain less insurance deductibles) relating to the final settlement of the Richmond, KY fire claim. The $123.6 million adjustment to EBITDA in fiscal 2020 primarily related to impairment of goodwill and other intangible assets of $44.2 million, $20.8 million of non-cash stock compensation, inclusion of $18.5 million of six months of pro forma earnings of NorthStar, $20.8 million of restructuring and other exit charges and $1.9 million of inventory adjustments (fair value step up relating to the NorthStar transaction), $14.3 million for insurance reimbursement for business interruption due to the Richmond, KY fire and other charges of $3.1 million. The $139.0 million adjustment to EBITDA in fiscal 2019 primarily related to the inclusion of $69.3 million of nine months of pro forma earnings of Alpha, $13.6 million for fees and expenses related to the Alpha transaction, $22.6 million of non-cash stock compensation, $23.2 million of non-cash restructuring and other exit charges and $10.3 million of inventory adjustments (including a fair value step up relating to the Alpha transaction of $7.2 million). The $23.2 million adjustment to EBITDA in fiscal 2018 primarily related to $19.5 million of non-cash stock compensation and $3.7 million of non-cash restructuring and other exit charges. (2) Debt includes finance lease obligations and letters of credit and is net of all U.S. cash and cash equivalents and foreign cash and investments, as defined in the Fourth Amended Credit Facility. In fiscal 2024, the amounts deducted in the calculation of net debt were U.S. cash and cash equivalents and foreign cash investments of $333.3 million; In fiscal 2023, were $347.0 million, in fiscal 2022, were $402.5 million, in fiscal 2021, were $399 million, in fiscal 2020, were $262 million, in fiscal 2019, were $200 million, and in fiscal 2018, were $372 million.

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May 2025 © 2025 EnerSys. All Rights Reserved. Non-GAAP Reconciliation 31 L E V E R A G E R AT I O B Y Q U A R T E R 1. The $56.2 million adjustment to EBITDA in the last twelve months ending March 31, 2025 primarily related to $27.8 million of non-cash stock compensation, $22.0 million of restructuring and other exit charges, impairment of indefinite-lived intangibles and write-down of other current assets of $5.5 million. The $85.8 million adjustment to EBITDA in the last twelve months ending March 31, 2024 primarily related to $30.6 million of non-cash stock compensation, $40.7 million of restructuring and other exit charges, impairment of indefinite-lived intangibles and write-down of other current assets of $13.6 million. 2. Debt includes finance lease obligations and letters of credit and is net of all U.S. cash and cash equivalents and foreign ca sh and investments, as defined in the Fourth Amended Credit Facility. In the last twelve months ending March 31, 2025 and March 31, 2024, the amounts deducted in the calculation of net debt were U.S. cash and cash equivalents and foreign cash investments of $343.1 million, and in fiscal 2024, were $333.3 million.

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May 2025 © 2025 EnerSys. All Rights Reserved. Key Performance Indicator 34 P R I M A R Y O P E R AT I N G C A P I TA L As part of managing the performance of our business, we monitor the level of primary operating capital, and its ratio to net sales. We define primary operating capital as accounts receivable, plus inventories, minus accounts payable. The resulting net amount is divided by the trailing three month net sales (annualized) to derive a primary operating capital percentage. We believe these three elements included in primary operating capital are most operationally driven, and this performance measure provides us with information about the asset intensity and operating efficiency of the business on a company-wide basis that management can monitor and analyze trends over time. Primary operating capital was $932.2 million (yielding a primary operating capital percentage of 23.9%) at March 31, 2025 and $852.9 million (yielding a primary operating capital percentage of 23.4%) at March 31, 2024. The primary operating capital percentage of 23.9% at March 31, 2025 is 50 basis points higher than that for March 31, 2024, and 280 basis points lower than that for March 31, 2023. The change in the ratio is primarily due to an increase primarily related to higher sales at the end of the current period. Additionally Bren-Tronics provided additional outstanding balances of accounts receivables and accounts for the increase to inventory. Accounts payable increased due to seasonality.

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May 2025 © 2025 EnerSys. All Rights Reserved. Thank you. For more information visit us at www.enersys.com Trademarks and logos are property of EnerSys and its affiliates unless otherwise noted. Subject to revisions without prior no tice. E.&O.E. 35

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