InfoLink's July 1 ESS spot assessment landed flat for the fourth consecutive week: 280 Ah LFP storage cells at RMB 0.378/Wh, 314 Ah at RMB 0.375/Wh, 2-hour DC-side ESS at RMB 0.50/Wh. Lithium carbonate, meanwhile, rebounded 0.6% WoW to RMB 156,000/MT after falling 7.7% the week prior. Cells absorbed both moves identically, which is to say not at all.
During the deflation era, the China cell spot was the single most informative number in the battery supply chain. It moved directionally, it transmitted upstream dynamics legibly, and it answered the procurement question that mattered: lock or float. Since late April, the price has held a narrow band while lithium carbonate climbed 71% off its December 2025 floor of RMB 91,000/MT. Cells passed through roughly a quarter of that move, then stopped.
Flat does not mean uninformative. It means the information about who is healthy and who is bleeding has migrated from the spot assessment into the spread between the range floor (RMB 0.345/Wh) and ceiling (RMB 0.410/Wh), into utilization rates, into producer balance sheets. The features that follow track where it went. The condition worth naming here: the master variable went quiet, and reading the Chinese cell market from the outside just got materially harder.
The plateau sequence (InfoLink Consulting, ESS spot)
- Oct 2025 floor: 314 Ah at CNY 0.300/Wh · 280 Ah at CNY 0.298/Wh
- Apr 20, 2026: 314 Ah at CNY 0.365/Wh (+22%) · 280 Ah at CNY 0.370/Wh (+24%)
- Jun 3 → Jul 1: Both formats flat WoW for 4+ consecutive weeks at current levels
The divergence
- Lithium carbonate: +71% from Dec 2025 floor to Jul 1, 2026 (RMB 91,000 → 156,000/MT)
- 314 Ah cells: +25% over the same period (CNY 0.300 → 0.375/Wh)
- Pass-through ratio: ~0.35x — editorial estimate based on the above
Deflation deceleration (BNEF annual surveys)
- 2024: Global pack prices $115/kWh, −20% YoY
- 2025: $108/kWh, −8% YoY
- 2026 H1: China ESS cell spot flat — third step in the sequence
Next read: InfoLink's next ESS spot issue expected ~July 8–9