Hithium targets 8-hour storage with 1300 Ah cell and 6.9 MWh system

Hithium presented two large-format energy storage cells and associated containerized systems at SNEC 2026 in Shanghai, as it expands its focus on the long-duration energy storage segment.

The company introduced the mass-production version of its ∞Cell 1300 Ah LFP cell, first announced in December 2025, alongside the first mass-production-level display of its ∞Power 6.9 MW/55.2 MWh eight-hour containerized storage system based on the cell. It also presented its ∞Cell 650 Ah cell and an ∞Power 10+ MWh system. The products were shown under the exhibition theme “Long-Duration Powering, Green Energy Enduring.”

Hithium said the 1300 Ah cell is designed for eight-hour storage applications. The company stated that the cell was developed based on system-level requirements, including 20-foot container dimensions, international transport constraints, and 1,500 V DC system architectures commonly used in energy storage.

According to the company, the ∞Cell 1300 Ah uses LFP chemistry, with a nominal capacity of 1300 Ah, gravimetric energy density of at least 190 Wh/kg, volumetric energy density of at least 406 Wh/L, and a design life exceeding 25 years. HiTHIUM said the cell incorporates materials and structural optimizations to reduce temperature rise.

The ∞Power 6.9 MWh system uses a 4 × 1P416S configuration, liquid cooling, and CAN, RS485, and Ethernet communications. The company lists system-level gravimetric energy density of at least 135 Wh/kg and volumetric energy density of at least 160 Wh/L. The system supports side-by-side and back-to-back deployment and features low-noise cooling, a low-GWP refrigerant, recyclable structural components, and multi-stage active fire detection and protection. It is designed to comply with NFPA 855.

Hithium said the newly introduced 650 Ah cell and ∞Power 10+ MWh system are intended to expand its large-format product portfolio. Public information on the 650 Ah cell remains limited. The company said the platform is designed to improve project economics through higher energy density and improved system integration efficiency. Delivery is expected to begin in 2027.

The launch builds on Hithium’s long-duration storage roadmap over the past year.

In December 2024, the company introduced 1175 Ah and 587 Ah cells and a 6.25 MWh system, which it later said entered mass production and global delivery. In December 2025, it launched the ∞Cell 1300 Ah cell and the ∞Power 6.9 MW/55.2 MWh eight-hour system concept, with mass delivery planned for the fourth quarter of 2026.

HiTHIUM has also outlined manufacturing plans in Chongqing and Heze, Shandong province, with more than 70 GWh of planned long-duration storage capacity expected to support deliveries from 2027. The company said its portfolio now covers 1- to 8-hour applications, combining LFP and sodium-ion technologies for utility-scale, commercial and industrial, and residential use cases.