ENS Q2 2026 Earnings Presentation

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November 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 November 5, 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 November 5, 2025, which is located on our website at www.enersys.com. 2

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November 2025 © 2025 EnerSys. All Rights Reserved. Q2’26 Call Highlights 4 Record Q2 net sales +8% Y/Y and +7% Q/Q Record Q2 adjusted EPS1 ex 45X benefits +15% Y/Y and +37% Q/Q Realizing early EnerGize achievements Positive demand trends in the majority of our end markets, with some timing variability Returned $78M to shareholders through buybacks and dividends Q3 guidance2 net sales +4% Y/Y, with adjusted EPS3 ex 45X +8% at midpoint of range 1 Non-GAAP measure. Please refer to appendix for reconciliation. Includes IRC 45X tax credit recorded in Cost of Sales (COS): $40M in Q2’26 and $33M in Q2’25 2 Q3’26 guidance assumes tariff rates as of November 5, 2025. 3 EnerSys does not provide a quantitative reconciliation for forward-looking statements. Please see our latest Form 8-K which includes our press release dated November 5, 2025, for more details.

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November 2025 © 2025 EnerSys. All Rights Reserved. Q2’26 Performance 5 A D J U S T E D E P S1 E X 4 5 X $ 1 . 5 1 U P + 1 5 % Y / Y Adj Gross Margin1,2 of 29.1% +40bps Y/Y; ex 45X Adj Gross Margin1,2 of 24.9%, Flat Y/Y $951M Net Sales +8% Y/Y $130M Adj Op Earnings1,2 +13% Y/Y +10% Y/Y ex 45X $146M Adj EBITDA1,2 +13% Y/Y +11% Y/Y ex 45X $2.56 Adj EPS1,2 +21% Y/Y +15% Y/Y ex 45X $197M Free Cash Flow1 +$194M Y/Y 1 Non-GAAP measure. Please refer to appendix for reconciliation. 2 Includes $40M of IRC 45X tax credit recorded in Cost of Sales (COS) in Q2’26 and $33M in Q2’25

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November 2025 © 2025 EnerSys. All Rights Reserved. EnerGize Progress Update • Realizing Early Cost Savings | Reduction in force actions largely complete; expect to realize $30M - $35M of net savings FY’26 • Delivering for our Customers | Power Electronics CoE cut validation time on new components, enabling faster delivery with large Communications customer • Reducing Scrap Rates | Lead-Acid CoE implemented AI-trained inspection cameras and software that identify defects in battery plates real-time, enabling immediate corrective actions • Increasing Rigor in NPIs, R&D and CapEx Investments | Reduced CapEx 30% Q2’26 vs Q2’25 EnerGize Strategic Framework Enabling Early Wins 6 OPTIMIZE Our Core ACCELERATE Our Growth INVIGORATE Our Operating Model CoE – Center of Excellence NPI – New Product Introduction

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November 2025 © 2025 EnerSys. All Rights Reserved. TARIFF EXPOSURE 1 MITIGATI ON & ACTIONS Tariff Landscape & Mitigation 7 Committed to Fully Mitigating Financial Impact of Tariffs 1 Tariff exposure as of November 5, 2025. Annualized amount for FY’26. • Dedicated Tariff Task Force in place • Proactively assessing and mitigating: ‒ Direct tariff and inflation pressures ‒ Market dynamics, including headwinds and opportunities • Actioning supply chain and pricing mitigations • 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% O R I G I N O F U S S U P P LY S O U R C E S US MX/CAN EMEA Other China Limited tariff exposure ~$70M Current Annualized Tariff Exposure • ~65% global revenue in US • US supply sourced from: ‒ 78% US or USMCA compliant ‒ 22% limited tariff exposure o EMEA exposure primarily EU and UK o Other exposure primarily Southeast Asia

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November 2025 © 2025 EnerSys. All Rights Reserved. Demand Trends 8 O R D E R PAT T E R N S F L U C T U AT I N G O N M I X E D M A R K E T D Y N A M I C S Backlog Moderated as Customers Adjust Buying Patterns While Navigating Macro Environment 1 Stated in a constant currency at a static budgeted exchange rate MP – Motive Power ES – Energy Systems SP – Specialty • Q2’26 orders (1%) Y/Y and (7%) Q/Q on MP and ES offset by SP • Q2’26 book to bill .90 down Y/Y and Q/Q illustrating dynamic conditions from current economic climate MP .87, ES .91, SP .95 (.78 A&D, 1.14 Trans) • Q2’26 backlog (8%) Y/Y and (10%) Q/Q on MP buying pattern changes and ES Q2 pull-ins partially offset by higher SP on aftermarket order growth 0.85 0.97 0.90 Q2'24 Q3'24 Q4'24 Q1'25 Q2'25 Q3'25 Q4'25 Q1'26 Q2'26 Book to Bill1 Total Company 862 851 Q2'25 Q2'26 Orders1 MP ES SP Total 0.91 0.87 1.06 0.91 0.88 0.95 0.97 0.90 Q2'25 Q2'26 Book to Bill1 MP ES SP Total 984 900 Q2'25 Q2'26 Backlog1 MP ES SP Total

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November 2025 © 2025 EnerSys. All Rights Reserved. Sustainability Report Highlights 9 I M P R O V I N G E F F I C I E N C Y A N D R E D U C I N G C O S T S Committed to Our Communities, Operational Excellence & Supporting Global Energy Resilience Energy Efficiency Gains • Reduced energy intensity 19% per kWh produced since FY’21 Cost-Saving Facility Upgrades • Advanced HVAC controls at Warrensburg, MO plant • Reduced annual energy costs by $250k • Avoids 1,900 metric tons of CO₂e emissions per year Energy Security • Advanced solutions that strengthen global energy security by enabling more resilient power systems Early ESRS Disclosure • Published European Sustainability Reporting Standards (ESRS) -aligned disclosures ahead of the mandated deadline

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November 2025 © 2025 EnerSys. All Rights Reserved. Q2’26 Results 12 Adjusted Op Earnings ex 45X +10% Y/Y on +8% Net Sales Growth 1 Non-GAAP measure. Please refer to appendix for reconciliation. Includes IRC 45X tax credit recorded in Cost of Sales (COS): $40M in Q2’26 and $33M in Q2’25 ($M, except EPS)Prior Year 45X Current Year 45X Prior Year Base Current Year Base Q2'25 Q2'26 13.6% 13.0% ADJ OP EARNINGS 1 & MARGIN Q2'25 Q2'26 15.3% 14.6% Q2'25 Q2'26 $884 $951 Q2'25 Q2'26 $115 $130 $2.12 $2.56$129 $146 ADJ EBITDA 1 & MARGIN NET SALES ADJ DILUTED EPS 1 Y/Y %Δ Volume +3% Price/mix +3% Acquisition +1% FX +1% Total +8% $1.51 ex 45X $1.31 ex 45X $90 ex 45X 9.5% $82 ex 45X 9.3% $106 ex 45X 11.2% $96 ex 45X 10.9%

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November 2025 © 2025 EnerSys. All Rights Reserved. Net Sales Adj Op Earnings1 Adj OE Margin1 Energy Systems $435 +14% $33.6 +38% 7.7% +130 bps Motive Power $360 (2%) $47.9 (17%) 13.3% (240 bps) Specialty $157 +16% $14.6 +98% 9.2% +380 bps Total2 $951 +8% $129 +13% 13.6% +60 bps Q2’26 Business Segment Financials 13 1 Non-GAAP measure. Please refer to appendix for reconciliation. 2 Total includes Corporate Other - $33M for Adjusted Operating Earnings, which includes IRC 45X tax credit recorded in Cost of Sales (COS) of $40M. Energy Systems • Continued Data Center growth and ongoing recovery in U.S. Communications • Realizing cost optimization benefits supporting operating leverage and margin expansion Motive Power • Lower volumes as market volatility persists • Pass through of inflationary costs weighed on earnings and margins • Maintenance-free product sales +14%; 29.9% of sales Q2’26 vs 25.8% Q2’25 Specialty • Strong A&D volumes incl Bren-Tronics driving growth • Richer mix and improving mfg performance driving earnings and margin expansion Volume +10% Price/mix +3% FX +1% Volume +3% Price/mix +3% Acquisition +1% FX +1% Volume (6%) Price/mix +2% FX +1% Volume +7% Price/mix +1% Acquisition +7% FX +1% ($M and Y/Y %)

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November 2025 © 2025 EnerSys. All Rights Reserved. 0.7x 2.0x 2.3x 1.7x 2.5x 1.8x 1.0x 1.3x 1.6x 1.3x FY'18 FY'19 FY'20 FY'21 FY'22 FY'23 FY'24 FY'25 Q1'26 Q2'26 ($M) Q4’25 Q2’26 Cash and Cash Equivalents $343 $389 Net Debt3 $781 $842 Net Leverage Ratio3 1.3x 1.3x Primary Operating Capital4 $932 $1,007 Balance Sheet, Cash Flow and Leverage 14 Strong Balance Sheet Enabling Disciplined Capital Allocation Choices 1 Balances as of periods ending March 31, 2025, and September 28, 2025 2 Periods ending September 29, 2024, and September 28, 2025 3 Net Debt includes finance lease obligations and letters of credit, net of cash and cash equivalents. Net leverage ratio = Net Debt / Adj EBITDA (per credit agreement). 4 Primary Operating Capital (POC) is a key performance indicator. Free Cash Flow is a non-GAAP measure. Please refer to appendix for reconciliations. SELECTED BALANCE SHEET METRICS 1 ($M) Q2’25 Q2’26 Cash Flow from Operations $34 $218 CapEx ($30) ($21) Free Cash Flow4 ($3) $197 Free Cash Flow4 Conversion 4% 288% SELECTED CASH FLOW METRICS 2 NET LEVERAGE RATIO 3

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November 2025 © 2025 EnerSys. All Rights Reserved. Disciplined Capital Allocation Strategy 15 Balancing Innovation and Growth Investments while Returning Capital to Shareholders 1 Non-GAAP financial measure. Please refer to appendix for reconciliation; Net leverage = Net Debt / Adj EBITDA (per credit agreement) 2 As of November 4, 2025; includes the 2025 stock repurchase authorization as well as estimated anti-dilution repurchases 15 Priorities Q2’26 Future Priorities Invest in Organic Growth (CapEx) $21M • Enhance disciplined ROIC thresholds • Drive incremental operational efficiencies • Progress domestic-sourced lithium strategy Strategic M&A Fully Integrated Rebel Systems • Focused on opportunities to: ➢ Strengthen customer intimacy ➢ Expand wallet share, leveraging leading positions in growing end markets ➢ Progress transformation journey • Ample dry powder for opportunistic tuck-in acquisitions Net Leverage1 1.3x EBITDA • Target below low end of 2x – 3x long-term net leverage range during volatile macro for optionality Return of Capital Dividends Buybacks $10M $68M • Committed to competitive dividend that grows with earnings over time (excluding IRC 45X funds) • ~$960M outstanding repurchase authorization2

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November 2025 © 2025 EnerSys. All Rights Reserved. 1 Q3’26 guidance assumes tariff rates as of November 5, 2025. 2 Q3’25 45X benefit of $75M included $36M in retroactive benefit adjustment or a one-time benefit of ~$.90 per share 3 EnerSys does not provide a quantitative reconciliation for forward-looking statements. Please see our latest Form 8-K which includes our press release dated November 5, 2025, for more details. Looking Ahead: Q3’26 Guidance 16 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 PA U S E D Confidently Navigating Macro Dynamics, Committed to Delivering Strong Earnings Performance Q3’26 GUIDANCE 1 Y / Y C H A N G E ( A T M I D P O I N T O F G U I D A N C E ) Net Sales $920M – $960M +4% IRC 45X Benefit to Cost of Sales $35M – $40M (50%)2 Adj. EPS3 $2.71 – $2.81 (36%)2 Adj. EPS3 ex 45X (base business) $1.64 - $1.74 +46% ASSUMPTIONS Q3’26 • ES: Strong Data Center demand and steady Communications market recovery tempered by Q2 pull-ins • MP: Demand resuming but paced by customer buying decisions amid trade uncertainty, continued maintenance-free conversion • SP: Robust A&D, growth in Class 8 aftermarket FY’26 • Q1’26 earnings expected to mark low point of year • Adj OE growth ex 45X to outpace revenue growth • ES: Robust Data Center and gradual improvements in Communications markets • MP: Customers resuming normal buying patterns with enthusiasm for maintenance-free offerings • SP: Accelerating A&D, continued soft Class 8 OEM market F Y ’ 2 6 G U I D AN C E Adj Tax Rate ex 45X 20% - 22% CapEx ~$80M

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November 2025 © 2025 EnerSys. All Rights Reserved. Non-GAAP Reconciliation 23 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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November 2025 © 2025 EnerSys. All Rights Reserved. Non-GAAP Reconciliation 24 L E V E R A G E R AT I O B Y Y E A 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. 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 2025, the amounts deducted in the calculation of net debt were U.S. cash and cash equivalents and foreign cash investments of $343.1 million; in fiscal 2024, were 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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November 2025 © 2025 EnerSys. All Rights Reserved. Non-GAAP Reconciliation 25 L E V E R A G E R AT I O B Y Q U A R T E R 1. The $84.3 million adjustment to EBITDA in the last twelve months ending September 28, 2025 primarily related to $38.4 million of non-cash stock compensation, $22.7 million of restructuring and other exit charges, impairment of indefinite- lived intangibles and write-down of other current assets of $5.5 million. The $79.9 million adjustment to EBITDA in the last twelve months ending September 29, 2024 primarily related to $29.7 million of non-cash stock compensation, $38.9 million of restructuring and other exit charges, impairment of indefinite-lived intangibles and write-down of other current assets of $10.5 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 September 28, 2025 and September 29, 2024, the amounts deducted in the calculation of net debt were U.S. cash and cash equivalents and foreign cash investments of $388.6 million, and in fiscal 2024, were $407.9 million.

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November 2025 © 2025 EnerSys. All Rights Reserved. Key Performance Indicator 29 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 $1,007.3 million (yielding a primary operating capital percentage of 26.5%) at September 28, 2025, $932.2 million (yielding a primary operating capital percentage of 23.9%) at March31, 2025 and $978.8 million at September 29, 2024 (yielding a primary operating capital percentage of 27.7%). The primary operating capital percentage of 26.5% at September 28, 2025 increased by 260 basis points compared to March 31, 2025 and decreased 120 basis points compared to September 29, 2024. The increase in primary operating capital percentage at September 28, 2025 compared to March 31, 2025 was primarily due to increases to inventory for strategic build up and decreases to accounts payable levels due to timing of payments. The decrease in primary operating capital percentage at September 28, 2025 compared to September 29, 2024 was due to improved collections and increases to accounts payable due to timing of payments. Primary operating capital and primary operating capital percentages at September 28, 2025, March 31, 2025 and September 29, 2024 are computed as follows:

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November 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.

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