China's domestic lithium carbonate market has moved beyond its earlier dual focus on spot-futures convergence and destocking. The current driver is a gap between two forces: the strength of near-term destocking and the market's reassessment of when Jianxiawo might restart.
On August 7, the Yifeng County Ecology and Environment Bureau, Jiangxi Province, confirmed on-site that Jianxiawo remained in shutdown and maintenance, with no ore loading, transportation, or crushing activities. On August 17, the Yichun Municipal Ecology and Environment Bureau released a pre-approval public notice for the mine's EIA (August 17-28), indicating that while the permitting process is moving forward, no physical supply has yet entered the market. The probability of meaningful Q3 output remains extremely low, and the base case still points to a ramp-up only in Q4.
The earlier market narrative, that a Q3 supply surge from Jianxiawo would crush prices, has thus been partially invalidated. Alongside seven consecutive weeks of destocking through July and August, battery-grade lithium carbonate prices rebounded from below Yuan 140,000/tonne in early August to around Yuan 153,000/tonne.
However, the rebound has been collectively capped by high exchange warehouse receipts at 36,700 lots as of this writing, rising overseas ore arrivals, and lithium converters' increased willingness to open hedging positions in the Yuan 155,000-160,000/tonne range. The lithium prices are therefore expected to remain rangebound in the near term, with Jianxiawo acting as the "expectation switch" for the upper end of that range.
Currently, Mysteel assessed China's battery-grade lithium carbonate spot prices at Yuan 152,800/tonne as of August 17, 2026, with the most-traded futures contract closing at Yuan 153,500/tonne at Guangzhou Futures Exchange, both above the August 1-17 average of Yuan 145,200/tonne.
Source: Mysteel
On the same day, Mysteel's sampled traders reported 2,740 tonnes of lithium carbonate spot transactions, all to downstream buyers, and the settlement price with back-pricing orders averaged Yuan 152,000/tonne, closely tracking futures and reflecting essential restocking demand. Meanwhile, the LC2609-LC2701 spread narrowed from a low of Yuan 6,000/tonne to around Yuan 1,000/tonne, suggesting that market pessimism over medium term supply demand has eased. Premiums/discounts for some spodumene based and recycled based brands also strengthened modestly from earlier levels.
On the raw material front, lithium ore inventories have moved off their recent lows. As of August 14, traders' stocks stood at 128,000 tonnes, and port inventories at 243,000 tonnes, both suggesting that the feedstock tightest has passed.
Major lithium converters have built ample raw material stocks for Q3, with procurement focused on supply security rather than speculative restocking and mulling to raise processing fees. However, if processing fees rise to the Yuan 19,000–20,000/tonne threshold, the converters relying on outsourced feedstock could notably raise their operating rates.
Inventory data points to a continued destocking trend, though with notable structural shifts.
As of August 12, total lithium carbonate inventories across 207 sample firms fell 3.96% week-on-week. The breakdown, however, reveals a clear divergence. The converters' inventories edged up, indicating no active producer destocking. The traders' own and custodied inventories dropped palpably, reflecting aggressive liquidation in the trading segment. The cathode producers and cell plants' inventories, on the other hand, slightly moved up, pointing to downstream restocking at lower levels.
In other words, destocking is being driven by the trading segment rather than converters, suggesting inventory has been moving from the traders to downstream players, but without a surge in demand. Combined with warehouse receipts climbing to 36,700 lots, this structural shift is capping price upside.
In summary, both supply and demand are on expansion paths, with the key tension centered on the mismatch of growth paces. On the supply side, the converters undertaking overhaul are expected to gradually restart after August, while the Jianxiawo restart remains uncertain. At the same time, Zimbabwean and Australian mine restarts are adding to supply, and expectations of rising global supply are being steadily priced in.
On the demand side, strong energy storage demand, front-loading ahead of the export tax rebate removal, and the upcoming LFP capacity ramp-up are expected to provide support. Year-end inventory-to-sales ratios are expected to fall to relatively low levels, offering medium-term price support.
Against this backdrop, the uncertainty surrounding the Jianxiawo restart is likely to drive significant price volatility in September-November, though near-term August prices are expected to remain rangebound.
Written by Aggie Hu, huchenying@mysteel.com
