High-purity manganese sulfate monohydrate (HPMSM) — a critical precursor for lithium-ion battery cathodes — is experiencing a structural demand surge as automakers shift toward manganese-rich chemistries. Lithium-manganese-iron-phosphate (LMFP) and manganese-enhanced NMC cathodes reduce reliance on nickel and cobalt while improving energy density, making manganese a strategically important battery metal for the first time. (FACT: aInvest, April 2026)
The supply response is constrained by a fundamental geographic imbalance. China controls approximately 85% of global HPMSM refining capacity, giving Beijing effective leverage over a material that is becoming essential to Western EV supply chains. (FACT: INN, May 12, 2026) Multiple Western developers are now racing to establish non-Chinese refining capacity. Electric Metals (USA) launched a Preliminary Economic Assessment in May 2026 for HPMSM and electrolytic manganese metal (EMM) processing facilities at its North Star Manganese Project in Minnesota, where the PEA highlighted a post-tax NPV of $1.39 billion, a 43.5% IRR, and a 23-month payback. (FACT: INN, May 12, 2026)
In Botswana, Giyani Metals reported successful interim results from Phase 2 of its Digital DNA Supply Chain Qualification Program with US battery technology leader Charge CCCV, producing high-purity manganese oxide (HPMO) from its K.Hill demonstration plant in Johannesburg. (FACT: INN, May 5, 2026) The company has developed a flowsheet that can produce both HPMSM and HPMO from its Botswana ore body, targeting a supply chain that bypasses Chinese processing entirely.
The manganese ore market that feeds these refineries is itself undergoing structural change. South Africa shipped a record 26.2 million tonnes of manganese ore in 2025, with manganese production rising 14.4% year-on-year in March 2026. (FACT: Discovery Alert, May 18, 2026) But logistics remain the bottleneck. Transnet's rail network limitations mean approximately 10 million tonnes of South Africa's manganese exports still moved by road in 2025. (FACT: African Mining Market, April 23, 2026) The planned 16-million-tonne Ngqura manganese terminal in the Eastern Cape would significantly expand export capacity, but its utility depends on resolving inland rail constraints. Transnet has committed ZAR 127 billion over five years to rail modernization and is opening 41 routes to private operators. (FACT: African Mining Market, April 23, 2026)
On pricing, manganese ore markets show a two-speed dynamic. South32's June 2026 quotation for Australian lump ore (42% Mn) was set at $5.40/dmtu CIF China, a $0.50 decrease from May, reflecting soft steel-sector demand. (FACT: Mining Bulletin, May 7, 2026) But battery-grade manganese sulfate in China maintains firm cost support from elevated ore prices and high sulfuric acid costs, with the global tight supply balance for ore keeping a floor under prices. (FACT: SMM, April 24, 2026) The divergence between traditional steel-market manganese and battery-grade manganese is widening — a gap that will persist as LMFP penetration grows.
Global manganese ore production reached approximately 57 million tonnes in 2025, with output expected to grow modestly to around 59 million tonnes in 2026. (FACT: aInvest, April 2026) But this growth is driven by steel-grade ore. Battery-grade HPMSM requires significantly higher purity specifications and entirely separate processing infrastructure — the bottleneck is not ore supply but refining capacity, specifically refining capacity outside China.
The number that matters for your business
A battery manufacturer sourcing HPMSM for a 10 GWh LMFP cathode plant requires approximately 15,000–18,000 tonnes of HPMSM annually. At current battery-grade manganese sulfate prices of approximately $800–900/tonne (supported by elevated ore costs and sulfuric acid prices), the annual material cost is roughly $13–16 million — and entirely dependent on Chinese refiners unless a Western supply chain materializes. A 10% disruption premium on Chinese HPMSM supply would add $1.3–1.6 million in annual costs, with no immediate alternative source at scale.
Action: For EV and battery cathode manufacturers, evaluate HPMSM supply agreements with geographic diversification clauses now — the window before Western processing capacity (Electric Metals North Star, Giyani K.Hill) reaches commercial production (2028–2030) is the period of maximum Chinese supply dependence. For steel-sector manganese buyers, the Transnet rail constraint remains the primary pricing variable: track monthly South African rail throughput data. If private operator integration (2026/27) adds the targeted 20 million tonnes of freight capacity, expect ore availability to improve and seaborne premiums to narrow.
Horizon: For battery-grade, secure H2 2026–2027 volumes within 90 days. New Western HPMSM capacity is unlikely before 2028. For steel-grade, monitor the Ngqura terminal timeline and private rail operator licensing through H2 2026.
Trigger: Watch three signals: (1) China's export controls on manganese processing technology — any restriction would accelerate the Western refining premium; (2) Transnet's H1 2026 rail throughput vs ZAR 127 billion investment plan — missed targets keep the logistics premium in ore pricing; (3) LMFP battery adoption rates in Chinese EVs — if LMFP penetration exceeds 25% of the Chinese EV market by year-end 2026, HPMSM demand growth will outpace current supply projections.