Enersys (ENS) Q4 2026: Book-to-Bill Tops 1.1 as Defense and Data Center Orders Drive Recovery Signals
Enersys exits fiscal 2026 with strong order momentum, a record book-to-bill, and visible tailwinds from data center, defense, and communications markets, even as core forklift and transportation volumes remain soft. The company’s operational discipline, strategic plant closures, and targeted lithium launches position it for margin resilience and top-line growth as macro headwinds abate and new product commissioning progresses.
Summary
- Order Momentum Accelerates: Book-to-bill above 1.1 signals broad-based recovery in key end markets.
- Margin Resilience Despite Cost Pressures: Freight, tariffs, and inflation offset by OPEX discipline and mix shift.
- Lithium and Defense Investments Set Stage: Commercial launches and plant realignment drive long-term growth visibility.
Business Overview
Enersys manufactures and sells energy storage solutions, primarily batteries and related systems, serving industrial, data center, communications, transportation, and defense customers. The business operates through three major segments: Energy Systems (broadband, data center, and power electronics), Motive Power (forklift and industrial vehicle batteries), and Specialty (aerospace, defense, and transportation). Revenue is generated through product sales and aftermarket services, with a growing emphasis on high-value, maintenance-free, and lithium-based offerings.
Performance Analysis
Enersys delivered record annual sales and profitability, with Q4 revenue up modestly year-over-year despite a 6% decline in organic volume. The quarter saw notable strength in Energy Systems and Specialty—both segments grew revenue and operating earnings, offsetting ongoing Motive Power headwinds from weak forklift and transportation demand. Adjusted gross margin compressed versus a difficult prior-year comp, as $20 million in higher freight and tariff costs weighed on profitability, but OPEX reductions and price/mix discipline preserved record adjusted EPS.
Free cash flow was robust, driven by working capital improvements and disciplined capital allocation, with cash conversion rates well above 100%. The company returned $409 million to shareholders via buybacks and dividends, while net debt fell and leverage remained low. Segment results highlight Energy Systems’ 7% revenue growth and margin expansion, Motive Power’s 21% operating earnings decline on volume and cost pressures, and Specialty’s 8% revenue growth on aerospace and defense strength.
- Order Book Acceleration: Q4 book-to-bill of 1.1, with all segments posting orders above revenue, signals inflection in demand.
- Cost Headwinds Absorbed: Tariff and freight inflation offset by $14 million in OPEX savings and price/mix gains.
- Cash Generation Strength: Q4 free cash flow of $131 million, conversion of 170%, and further improvement excluding tax credits.
Order growth in defense, space, and broadband underpins forward visibility, while sequential improvements in forklift and transportation orders suggest bottoming and the potential for cyclical recovery through fiscal 2027.
Executive Commentary
"We have structurally enhanced our business and are well positioned to deliver further value. Our ability to generate this level of earnings during the year in which demand in the electric forklift and transportation markets was down is a testament to the effectiveness of our energized strategic framework, the strength of our diversified business, and our renewed ability to perform across varied demand conditions going forward."
Sean O'Connell, President and Chief Executive Officer
"Gross margin in the quarter was in line with recent historical averages despite the margin dilution of the pass-through of tariffs and higher freight costs which were up $20 million year-on-year, net of having produced more products in region-for-region. OpEx in the quarter improved as a result of our cost reduction initiatives, with a net reduction of $14 million year-over-year."
Andy Funk, Executive Vice President and Chief Financial Officer
Strategic Positioning
1. Manufacturing Footprint Restructuring
Plant closures in Monterrey and Tijuana, Mexico are central to Enersys’s cost and margin strategy. These moves unlock $19 million in near-term savings and a projected $20 million in incremental tax benefits (IRC 45X) from fiscal 2028, while also reducing tariff risk and supporting a shift to higher-margin domestic production, especially for defense and regulated markets.
2. Lithium and Data Center Solutions
New lithium battery launches for data center and warehouse energy storage are advancing from customer validation to field commissioning. While revenue impact is not expected until fiscal 2028, these products are designed to capture incremental share in fast-growing, high-density power markets, leveraging Enersys’s technology stack and supply chain readiness.
3. Defense and Aerospace Expansion
Specialty segment growth is anchored by munitions, soldier power, and space batteries, with backlog and orders up sharply. The Greenville, South Carolina lithium cell plant will focus on secure, FEOC-compliant (Foreign Entity of Concern) supply for defense customers, reflecting a strategic pivot to higher-value, less commoditized applications where domestic sourcing is a competitive advantage.
4. Supply Chain and Tariff Mitigation
Active tariff management and supply chain diversification have stabilized tariff exposure at 22% of US sourcing, with further mitigation from region-for-region manufacturing. The company is actively recouping IEPA tariff refunds, though these are excluded from guidance, and continues to monitor Middle East conflict impacts on freight and input costs.
5. Go-to-Market and Operational Excellence
Centers of Excellence (COEs) are driving working capital improvements and supply chain efficiency, supporting cash flow and inventory discipline. The go-to-market strategy now emphasizes faster product launches, optimized design, and deeper service and software integration, particularly for lithium and high-value solutions.
Key Considerations
Enersys’s Q4 marks a transition from margin defense toward growth readiness, with operational execution and strategic investments setting the stage for a cyclical upturn and secular expansion in data center and defense.
Key Considerations:
- Order Inflection: Book-to-bill above 1.1 and sequential order growth in forklift and transportation signal pent-up replacement demand and potential volume recovery through fiscal 2027.
- Margin Management: OPEX discipline and price/mix offset $20 million in cost inflation, but further freight/tariff shocks remain a watchpoint.
- Lithium Commercialization: Customer commissioning is underway, but meaningful revenue from new lithium offerings will not materialize until fiscal 2028.
- Defense Backlog Visibility: Munitions, soldier power, and space battery orders and backlog provide multi-year growth runway, with European defense demand also accelerating.
- Capital Allocation Discipline: $409 million returned to shareholders in FY26, with buyback authorization and low leverage supporting continued flexibility.
Risks
Macro volatility and geopolitical risks remain material, with continued uncertainty in forklift and transportation recovery pace. Tariff exposure and freight inflation could further pressure margins if global conflicts persist or escalate. Delayed lithium commercialization and reliance on Asian supply chains for non-defense lithium products may limit near-term upside and expose Enersys to supply shocks until domestic capacity comes online. Project-based revenue in Energy Systems and Specialty introduces quarter-to-quarter variability, complicating forecasting and working capital management.
Forward Outlook
For Q1 2027, Enersys guided to:
- Net sales of $915 million to $955 million
- Adjusted diluted EPS of $2.80 to $2.90 (including $42 million to $47 million of 45X benefits); $1.61 to $1.71 excluding 45X
For full-year 2027, management expects:
- Adjusted operating earnings growth (excluding 45X) to outpace revenue growth, driven by OPEX discipline and price/mix strength
Management highlighted:
- Ongoing recovery in forklift and transportation, with order trends expected to improve through the year
- Continued strength in data center, communications, and defense, with new product launches and plant closures supporting margin and growth
Takeaways
Enersys’s diversified end-market exposure and operational discipline are cushioning cyclical softness and positioning the company to capitalize on secular growth in data center and defense. The transition from cost defense to growth initiatives is visible in the order book and strategic investments.
- Backlog and Book-to-Bill Signal Inflection: Broad-based order growth and a 1.1 book-to-bill ratio provide early evidence of demand recovery and set the stage for volume-driven growth in fiscal 2027.
- Strategic Realignment Underpins Margin and Resilience: Plant closures, tariff mitigation, and targeted lithium and defense investments are structurally improving Enersys’s margin profile and reducing risk.
- Growth Visibility Hinges on Execution: Commercialization of lithium products and defense cell manufacturing will be key watchpoints for top-line acceleration and sustained margin expansion over the next 12-24 months.
Conclusion
Enersys’s Q4 performance and guidance reflect a business at the early stages of cyclical recovery, with strategic investments and operational rigor providing margin support and future growth levers. Order momentum and targeted product launches will be critical to watch as the company seeks to convert backlog into revenue and defend its market position in a dynamic macro environment.
Industry Read-Through
Enersys’s results reinforce several industry-wide trends: The electrification of industrial fleets and warehouses is driving pent-up demand for motive power batteries, suggesting broader recovery potential for industrial OEMs and suppliers. Data center and AI infrastructure buildout remains a secular tailwind, with power density and energy storage solutions in high demand—benefiting not only battery manufacturers but also electrical equipment and grid modernization players. Defense and aerospace investment cycles are accelerating globally, with domestic sourcing and technology differentiation emerging as key competitive levers. Tariff and supply chain risk management is now a baseline requirement for industrials with global footprints, and proactive mitigation strategies will increasingly differentiate winners from laggards as geopolitical volatility persists.