Signal — Issue 10 | The Hysteresis

Weekly Tape

Two upstream cost inputs are rising while downstream cell and system prices stay put. Lithium carbonate posted a sharp daily gain on SMM's August 14 reading, but the two primary assessors now diverge by nearly RMB 10,000/MT — and one source's weekly direction is internally contradicted. Iron phosphate, up roughly 50% since year-end 2025, is already flowing through processing-fee increases at the cathode level.

Large-format LFP ESS cells held flat for a second straight week on both InfoLink and SMM. EV cells showed a marginal upward tick absent in the ESS series. System-level pricing has transmitted neither signal. Korean Q2 earnings supplied revenue mix data but no $/kWh ASPs. The US tariff stack simplified to 28.4% after the Section 122 expiry in late July.

Weekly Tape

Two upstream cost inputs are rising while downstream cell and system prices stay put. Lithium carbonate posted a sharp daily gain on SMM's August 14 reading, but the two primary assessors now diverge by nearly RMB 10,000/MT — and one source's weekly direction is internally contradicted. Iron phosphate, up roughly 50% since year-end 2025, is already flowing through processing-fee increases at the cathode level.

Large-format LFP ESS cells held flat for a second straight week on both InfoLink and SMM. EV cells showed a marginal upward tick absent in the ESS series. System-level pricing has transmitted neither signal. Korean Q2 earnings supplied revenue mix data but no $/kWh ASPs. The US tariff stack simplified to 28.4% after the Section 122 expiry in late July.

ESS Cells

LFP ESS Cells Flat, Upstream Inputs Rising

InfoLink RMB 0.360/Wh (Aug 12), SMM RMB 0.367/Wh (Aug 14), both unchanged WoW. Second consecutive flat week following InfoLink's -2.7% WoW concession on July 29. The RMB 0.007/Wh assessor gap persists. Upstream lithium carbonate and iron phosphate both rising — no transmission to cell pricing yet.

EV Cells

China EV Cells Tick Up Against Rising Inputs

SMM Aug 14: LFP 100 Ah $52.30/kWh (+$0.10), 174 Ah $52.60/kWh (+$0.10). NMC mixed — 5-series flat at $82.00, 6-series +$0.10 to $81.80, 8-series flat at $94.00. Marginal upward bias in LFP EV cells that the large-format ESS series has not shown.

Lithium Input

Lithium Carbonate Spikes, Assessors Diverge Sharply

SMM domestic average RMB 151,500/MT (Aug 14), up RMB 4,000/MT on the day. InfoLink's Aug 12 level sits at RMB 142,000/MT — a cross-source gap of roughly RMB 9,500/MT. InfoLink's own weekly summary is internally contradicted: table shows +1.1%, bullet text says -1.1%. Treat both assessments with caution until the gap resolves.

Iron Phosphate

Iron Phosphate Up 50% Since Year-End 2025

~RMB 10,000/MT at year-end 2025 to RMB 15,000/MT currently. Hunan Yuneng raised LFP processing fees RMB 2,000/MT effective August 1. Some cell makers accepted iron-phosphate-linked settlement terms in April–May, splitting fixed and indexed contract exposure across different calendars. A second upstream cost vector now running alongside lithium.

ESS Systems

System Prices Flat Despite Cell and Input Movement

InfoLink two-hour DC container RMB 0.49/Wh, four-hour AC system RMB 0.53/Wh, both flat WoW. The system layer has transmitted neither InfoLink's July 29 cell softness nor August's upstream lithium and iron phosphate pressure. Non-cell BOP costs remain sticky at this level.

Buyer Signal

Hebei Storage Tender Clears Below InfoLink Assessment

Hebei Transportation Investment Group awarded 300 MW / 1,200 MWh at approximately RMB 0.525/Wh. Scope includes cells, PCS, transformers, BMS, EMS, fire protection, installation, and warranty. Clears just below InfoLink's RMB 0.53/Wh four-hour AC-system assessment — a real-transaction data point against the published benchmark.

Korean ASPs

Korean Q2 Earnings Yield No Cell Price Data

LGES, Samsung SDI, and SK Innovation reported Q2 without publishing $/kWh ASPs. LGES ESS revenue hit 4.6x prior year; ex-45X operating loss narrowed to -KRW 127.7B from Q1's -KRW 397.6B. Revenue mix shifts make price inference unreliable. No Korean cell-price update this quarter.

US Landed

US Tariff Stack Settles at 28.4% Post-Expiry

Chinese-origin cells (HTSUS 8507.60.00): 3.4% MFN plus 25% Section 301, totaling 28.4% ad valorem. The 10% Section 122 surcharge expired July 24. At InfoLink's ~$0.050/Wh cell level, the stack adds roughly $0.014/Wh before freight, insurance, and system integration.

The Velocity Synthesis

Carbonate +6.1% WoW; Cell Quotes Did Not Move

By Elise Huan-Cartwright— August 14, 2026

Feature image for article: Carbonate +6.1% WoW; Cell Quotes Did Not Move

Battery-grade lithium carbonate reached RMB 151,663/MT on August 14, up 6.1% WoW and the sharpest weekly move since the rally began in late July. LFP cell quotes did not follow: both ESS assessors flat for the second consecutive week, EV formats at the minimum display increment. The gap is now wide enough to name what is carrying it — inventory basis, CAM contract lags, cell-maker margin, share preservation — and to say when each runs out. September CAM settlement resets are the first observable test.

The Velocity Synthesis

Carbonate +6.1% WoW; Cell Quotes Did Not Move

By Elise Huan-Cartwright— August 14, 2026

Battery-grade lithium carbonate reached RMB 151,663/MT on August 14, up 6.1% WoW and the sharpest weekly move since the rally began in late July. LFP cell quotes did not follow: both ESS assessors flat for the second consecutive week, EV formats at the minimum display increment. The gap is now wide enough to name what is carrying it — inventory basis, CAM contract lags, cell-maker margin, share preservation — and to say when each runs out. September CAM settlement resets are the first observable test.

Transmission Mechanism

Lithium Moves Up; the Concession Window Tightens

InfoLink's July 29 assessment attributed RMB 0.010/Wh concessions on 280/314 Ah LFP ESS cells to a named condition: easing upstream cost pressure. SMM's August 14 lithium carbonate at RMB 151,500/MT — up roughly RMB 8,000–11,000/MT from the range prevailing when those concessions were offered — is eroding that condition. Cells shipping today still embed lower-cost material. But the supplier can point to the same SMM screen the buyer watches and withdraw the discount before higher-cost cathode reaches the line. Hunan Yuneng already did this at the CAM layer: a processing-fee increase effective August 1, citing input costs that hadn't yet flowed through every unit leaving the facility. If you're negotiating Q4 ESS cell commitments, the relevant signal is the screen price trajectory, not the lagging cost basis in current inventory.

Transmission Mechanism

Lithium Moves Up; the Concession Window Tightens

InfoLink's July 29 assessment attributed RMB 0.010/Wh concessions on 280/314 Ah LFP ESS cells to a named condition: easing upstream cost pressure. SMM's August 14 lithium carbonate at RMB 151,500/MT — up roughly RMB 8,000–11,000/MT from the range prevailing when those concessions were offered — is eroding that condition. Cells shipping today still embed lower-cost material. But the supplier can point to the same SMM screen the buyer watches and withdraw the discount before higher-cost cathode reaches the line. Hunan Yuneng already did this at the CAM layer: a processing-fee increase effective August 1, citing input costs that hadn't yet flowed through every unit leaving the facility. If you're negotiating Q4 ESS cell commitments, the relevant signal is the screen price trajectory, not the lagging cost basis in current inventory.

TAKE NOTE

Late June–July Lithium carbonate ~RMB 140,000–144,000/MT. InfoLink names easing cost pressure as enabling ESS cell discounts.

July 16 Hunan Yuneng announces RMB 2,000/MT CAM processing-fee increase effective Aug 1, citing iron phosphate up ~50% YTD. (SMM)

July 29 InfoLink records RMB 0.010/Wh concessions on 280/314 Ah LFP cells. Notes room for further decline "relatively limited."

Aug 14 SMM lithium carbonate at RMB 151,500/MT, +RMB 4,000/MT on the session.

Watch for Whether SMM holds above ~RMB 148,000/MT through InfoLink's next assessment (expected ~Aug 19). Sustained levels above the concession-enabling range give suppliers screen evidence to reopen quotes.

Verification Access