314Ah and 100Ah Battery Formats: What the New Tender Means for Module and PACK Design

On July 20, 2026, the China Energy Storage Alliance reported details of a Tianhui Storage annual procurement tender tied to 2026-2027 supply. The structure is notable: 1.0GWh of 314Ah LFP cells and 0.2GWh of 100-110Ah LFP cells. That split is commercially meaningful because it reflects format coexistence rather than a full market move to a single large-cell standard.

The 314Ah format continues to represent the mainstream direction for higher-capacity storage products, where reducing part count and improving system-level energy density can help lower integration complexity. But the continued demand for 100-110Ah cells shows that smaller formats still have practical value in scenarios where mechanical envelope, voltage architecture, serviceability, thermal balance, or legacy platform compatibility remain important.

For module and PACK developers, this is the real takeaway. Cell selection should begin with application structure, not fashion. A larger cell may improve pack-level simplicity in some projects, but it can also narrow flexibility where platform constraints, BMS strategy, enclosure dimensions, or transportation conditions require a different balance. In many real projects, engineering fit still beats headline capacity.

This is especially relevant in customer segments that sit between pure cell purchasing and full-system integration: telecom backup, compact storage subsystems, mobility equipment, industrial electrification, and customized battery assemblies. These projects often need more attention to voltage grouping, cooling path, busbar arrangement, and maintenance logic than to headline cell size alone.

LYTH View:
The market is clearly scaling large-format LFP cells, but format diversity is still alive where the application requires it. Buyers should not assume that a trending cell model automatically produces the best module or PACK outcome.

What LYTH Can Do:
LYTH can help customers evaluate whether a 314Ah-class route or a smaller-format route makes more sense for the intended module or PACK architecture. Support can include cell-format comparison, mechanical and electrical matching, BMS adaptation, thermal coordination, and manufacturability-oriented customization.

Sources with clickable links:
CNESA report on the 1.2GWh tender
SMM coverage of the same tender