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Xiho
Sep 17 2026
In the first half of 2026, long-duration storage and AI data center load pushed large-format storage cells into the center of the battery industry. Projects with four-hour or longer duration kept growing, and 500Ah-plus cells started moving from roadmap slides into procurement talks. Yet most new lines were still at pilot or early ramp stage. The gap was clear: the market was hot, but volume production was hard.
Once Capacity Grows, Safety Becomes the Real Barrier
The case for large cells is straightforward. Inside a standard 20-foot container, a bigger cell means fewer cells, fewer parts, less wiring, and lower balance-of-system cost. But scaling from 200Ah-class to 500Ah-class is not just enlargement. Coating, calendering, winding, and electrolyte filling all need re-engineered processes. And the larger the cell, the more energy sits in one unit—so thermal runaway becomes harder to contain.
INPOWER Battery’s “Da Fang Wu Yu” 587Ah series, which entered mass production on September 5, takes a dual-version route.
Haohan 587Ah Liquid Electrolyte Storage Cell
This version targets the low-cost, long-life path. It is built for grid-side storage, renewable bases, and peak shaving. With high-precision stacking, low-swelling anode material, and dual-tab current collection, the cell improves current carrying and cuts internal resistance. For operators, that means lower maintenance cost and steadier cycle behavior in utility-scale energy storage system deployments.
Qiankun 587Ah Hybrid Solid-Liquid Storage Cell
This version targets the high-safety path. It is aimed at city-center sites, AI data centers, and chemical parks where fire risk is not acceptable. Nano-oxide solid electrolyte coating reduces lithium dendrite risk, while in-situ polymerized gel electrolyte lowers interface impedance and raises the flash point. In severe abuse tests—extreme crush, full cut, 200°C oven, and open-flame exposure—the cell avoids smoke, fire, and propagation.
6.5GWh Dedicated Line Brings Automotive-Grade Quality Into Storage
INPOWER did not retrofit an old line. It built a 6.5GWh dedicated line for 587Ah from the start, with AI inspection, digital twin modeling, ultra-wide coating, and high-accuracy stacking. As a Guangzhou-Auto-linked cell maker, it carries automotive-grade discipline into storage manufacturing: more than one thousand AI visual check points, unique lifetime traceability codes per cell, and PPB-level defect control.
For EPCs and integrators, the practical meaning is simple. A storage project runs 15 to 20 years. What matters is batch consistency, cycle life, and the ability to keep supplying replacement-grade cells—not just the biggest number on a datasheet.
The Second Half of the Big-Cell Race Is About Mass Production
China’s storage battery shipments are expected to exceed 1000GWh by 2030. But the competition is no longer only about capacity. It is about reliability, manufacturing stability, project support, and repeatable delivery.
INPOWER’s 587Ah mass production matters because it shows semi-solid-state large cells are no longer a conference slide. They can be made, tested, traced, and shipped. For companies building LiFePO4 battery pack, rack mount battery system, BMS, cell to pack solution, and custom battery solution products, the real opportunity is in the downstream ecosystem around these large cells.
If you want to talk about lithium ion batteries, energy storage solution, or battery pack accessories for residential, commercial, industrial, or off-grid projects, contact us. We also supply EVE cells, CATL cells, Gotion cells, Sungrow compatible components, JK BMS, battery connectors, and DIY battery kits.
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WhatsApp/Wechat/Mobile: +86 13332949210
Email: info@xihobattery.com
Website: www.xihopower.com
