Battery manufacturer EnerSys (NYSE: ENS) reported Q1 CY2026 results beating Wall Street’s revenue expectations, with sales up 1.4% year on year to $988 million. Guidance for next quarter’s revenue was optimistic at $935 million at the midpoint, 2.2% above analysts’ estimates. Its non-GAAP profit of $3.19 per share was 6.6% above analysts’ consensus estimates.

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“The fourth quarter capped a strong year for EnerSys, with our second highest revenue quarter in history and important progress advancing both our new lithium data center solution and BESS for warehouse operators into customer commissioning,” said Shawn O’Connell, President and Chief Executive Officer of EnerSys.

Company Overview

Supplying batteries that power equipment as big as mining rigs, EnerSys (NYSE: ENS) manufactures various kinds of batteries for a range of industries.

Revenue Growth

Reviewing a company’s long-term sales performance reveals insights into its quality. Any business can experience short-term success, but top-performing ones enjoy sustained growth for years. Unfortunately, EnerSys’s 4.7% annualized revenue growth over the last five years was tepid. This was below our standard for the industrials sector and is a poor baseline for our analysis.

Long-term growth is the most important, but within industrials, a half-decade historical view may miss new industry trends or demand cycles. EnerSys’s recent performance shows its demand has slowed as its annualized revenue growth of 2.3% over the last two years was below its five-year trend. We’re wary when companies in the sector see decelerations in revenue growth, as it could signal changing consumer tastes aided by low switching costs.

We can better understand the company’s revenue dynamics by analyzing its number of units sold. Over the last two years, EnerSys’s units sold were flat. Because this number is lower than its revenue growth, we can see the company benefited from price increases.

This quarter, EnerSys reported modest year-on-year revenue growth of 1.4% but beat Wall Street’s estimates by 1.5%. Company management is currently guiding for a 4.7% year-on-year increase in sales next quarter.

Looking further ahead, sell-side analysts expect revenue to grow 2.9% over the next 12 months, similar to its two-year rate. This projection is underwhelming and implies its newer products and services will not catalyze better top-line performance yet.

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Operating Margin

Operating margin is one of the best measures of profitability because it tells us how much money a company takes home after procuring and manufacturing its products, marketing and selling those products, and most importantly, keeping them relevant through research and development.

EnerSys has done a decent job managing its cost base over the last five years. The company has produced an average operating margin of 9.6%, higher than the broader industrials sector.

Looking at the trend in its profitability, EnerSys’s operating margin rose by 5.2 percentage points over the last five years, as its sales growth gave it operating leverage.

This quarter, EnerSys generated an operating margin profit margin of 12.5%, in line with the same quarter last year. This indicates the company’s cost structure has recently been stable.

Earnings Per Share

Revenue trends explain a company’s historical growth, but the long-term change in earnings per share (EPS) points to the profitability of that growth – for example, a company could inflate its sales through excessive spending on advertising and promotions.

EnerSys’s EPS grew at 18.7% compounded annual growth rate over the last five years, higher than its 4.7% annualized revenue growth. This tells us the company became more profitable on a per-share basis as it expanded.

Diving into the nuances of EnerSys’s earnings can give us a better understanding of its performance. As we mentioned earlier, EnerSys’s operating margin was flat this quarter but expanded by 5.2 percentage points over the last five years. On top of that, its share count shrank by 13.6%. These are positive signs for shareholders because improving profitability and share buybacks turbocharge EPS growth relative to revenue growth.

Like with revenue, we analyze EPS over a shorter period to see if we are missing a change in the business.

For EnerSys, its two-year annual EPS growth of 12.5% was lower than its five-year trend. We still think its growth was good and hope it can accelerate in the future.

In Q1, EnerSys reported adjusted EPS of $3.19, up from $2.97 in the same quarter last year. This print beat analysts’ estimates by 6.6%. Over the next 12 months, Wall Street expects EnerSys’s full-year EPS of $10.60 to grow 10.9%.

Key Takeaways from EnerSys’s Q1 Results

It was great to see EnerSys’s EPS guidance for next quarter top analysts’ expectations. We were also happy its EBITDA outperformed Wall Street’s estimates. On the other hand, its adjusted operating income missed. Overall, this print had some key positives. The stock traded up 4.3% to $224.70 immediately after reporting.

Big picture, is EnerSys a buy here and now? We think that the latest quarter is only one piece of the longer-term business quality puzzle. Quality, when combined with valuation, can help determine if the stock is a buy. We cover that in our actionable full research report which you can read here (it’s free).