From ESS News
China’s Gotion High Tech has unveiled the latest generation of its lithium iron phosphate utility-scale battery energy storage products and mega-capacity cells, reflecting the industry trend towards packing more energy into the standard 20-foot container.
The new products were launched last week at the 2025 Japan International Secondary Battery Exhibition, which took place from February 19 to 21. During the exhibition, Gotion signed sales framework agreements with “a number of internationally renowned energy companies”, totaling more than 7 GWh in orders.
The Chinese manufacturer said its next-gen 20-foot container system packs 40% more energy and has a 40% smaller footprint compared to a standard 5 MWh system.
The new product is based on 587Ah battery cells, with an energy density of more than 430 Wh/L. The capacity of a single battery cell stands at 1.87 kWh. It demonstrates a cycle life of more than 12,000 cycles and comes with an expected calendar life of more 25 years.
At the Japan show, Gotion has also presented its first 600+ Ah cells. A 650 Ah large-capacity energy storage cell was also officially unveiled, and the company also showcased an even larger capacity energy storage cell of 688 Ah at its booth.
The 688 Ah cell, which was developed in partnership with CRRC Zhuzhou Institute, successfully passed tests in late January. The energy density of this battery cell is as high as 435 Wh/L. A single-cell capacity reaches 2.2 kWh, the cycle life exceeds 10,000 times, and the calendar life spans more than 20 years.
The 20-foot standard cabin equipped with 688 Ah battery cells can increase the system capacity to more than 6.9 MWh. Compared to 5 MWh products, it can save about 20% of floor space, reduce the number of parts by about 20%, and save about 8% of initial cost.
According to the manufacturer, this enables cost reduction and efficiency improvement for the utility-scale BESS, including reduced land use, lower investment cost, ultra-long life, and long-durtaion storage.
Higher capacity cells were previously released by the likes of Envision (700 Ah featured in its industry-leading 8 MWh, 20-foot BESS container) and Hithium (1175 Ah featured in its latest 6.25MWh BESS with a four hour energy storage configuration).
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