China EV/ESS batteries: Fundamentals remain sound, 2Q results are the key catalyst

Overview

This report focuses on the China EV/ESS battery sector. HSBC believes that recent stock weakness and resilient operating fundamentals have diverged; the sector’s pullback mainly reflects profit-taking and market rotation after a strong rise in the first five months. As the 2Q26 earnings season approaches, the low base and earnings recovery are expected to be key catalysts for improving sector sentiment.

Core views

The key views are: first, battery demand remains strong, with EV and ESS jointly supporting sales and ESS becoming the main source of incremental growth; second, lithium carbonate prices were stable in 2Q at the RMB150k–200k/t range, so the cost side has not entered a new extreme cycle; third, in the second half of an up-cycle, emphasis shifts more to earnings quality and visibility of structural, sustained growth, and sector leaders are expected to win out through scale, customer mix, pricing power, and technology leadership.

Analysis framework

The report assesses the disconnect between sector fundamentals and valuation sentiment by comparing stock performance, industry sales, installation levels, production scheduling, lithium price bands, and technology trends, and treats 2Q26 earnings as the short-term catalyst while positioning ESS and AI data-center storage demand as the medium-term growth narrative.

Methodology notes

• industry cycle analysisstock-selection framework for the second half of an up-cycle

  Shift from beta repair to earnings quality and growth visibility

  The report believes cyclical recovery has gradually been priced in, and subsequent stock performance will depend more on earnings sustainability, execution strength, and structurally driven growth.

• fundamental validationthree-variable framework of demand, cost, and technology

  Judge sector dispersion through demand resilience, raw material prices, and technology leadership

  Demand is supported by EV and ESS, cost is influenced by lithium price volatility, and technology differentiation comes from advances in sodium-ion, solid-state batteries, and ultra-fast charging.

Asset mapping & comparison

Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).

• CATL (3750.HK / 300750.SZ)

  Sector's preferred holding

  Strengths

  It is scale-leading, with a diversified end-customer base and strong R&D capabilities, making it better able to defend margins during raw-material cycles.

  Weaknesses

  Its stock price has been affected by sector rotation and profit-taking, and may still be sensitive in the short term to sentiment and the pace of earnings execution.

  Comparison

  The report treats it as a leading position superior to generic sector beta exposure.

  Risks

  Earnings recovery may fall short of expectations, lithium prices may become volatile again, and technology commercialization may be slower than expected.

• China EV/ESS battery sector

  Primary covered industry

  Strengths

  Demand for EV and ESS remains strong, ESS is the main incremental driver, and AI data-center storage provides a medium-term narrative.

  Weaknesses

  Domestic EV sales growth has slowed, and as cyclical recovery becomes more fully priced in, normal beta sensitivity declines.

  Comparison

  It rose much more than CSI300 in the first five months but has underperformed since May; the report considers the pullback excessive.

  Risks

  Demand slowdown, pricing competition, raw-material cost volatility, and market style rotation.

Key data

• China battery sales783GWh in 5M26, +47% YoYIncluding exports; EV batteries were 528GWh, up 45% year-on-year, and energy-storage batteries were 256GWh, up 88% year-on-year.
• YoY growth of China battery sales in April and May+43% YoY in both April and MayThe report uses this data to show that demand fundamentals remain resilient.
• Recent sector performanceChina battery index down 13% over two months; CATL A-shares down 17%The report views this pullback as excessive versus operating fundamentals.
• Year-to-date performance through MayBattery sector +21% vs CSI300 +4%Part of the recent weakness reflects profit-taking after a prior strong uptrend.
• Lithium carbonate priceRMB150k–200k/t range in 2QPrices remained relatively stable and have not entered a new extreme cycle.
• China EV battery installations+7% YoY in 5M26Despite slowing domestic EV sales, higher battery capacity per vehicle and rising commercial EV penetration support installation demand.
• Commercial EV penetration rate39% in May 2026Higher commercialization of electric power in commercial vehicles supports battery installation demand.

Impact & implications

In the short term, 2Q26 earnings guidance and reported results may improve sector sentiment; in the medium term, the market is expected to place greater emphasis on earnings quality, incremental storage growth, storage demand from AI data-center power use, and leaders’ ability to handle lithium-price cycles and technology commercialization.

Risks

• 2Q26 earnings recovery or earnings quality may be weaker than market expectations.
• Slowing domestic EV sales could weaken EV battery installation growth.
• Heightened lithium price volatility could compress margins of non-leading peers.
• ESS or AIDC storage demand may materialize more slowly than expected.
• Uncertainty remains around technology commercialization progress, including sodium-ion, solid-state batteries, and ultra-fast charging.
• Market rotation and further profit-taking after prior gains may continue to weigh on short-term valuations.

What to watch

• Whether 2Q26 earnings guidance and full results validate earnings recovery.
• Whether battery production scheduling continues to rise month-over-month in June and July.
• Whether ESS battery sales and export demand can sustain high growth.
• The order intake and commercialization pace of storage deployments from AI data centers.
• Whether lithium carbonate prices remain in the RMB150k–200k/t range.
• Whether CATL H/A stock price tracks the Buy/Buy rating and target prices.