Most battery developers view semi-solid technology as a temporary fix on the road to fully solid-state batteries. A major Chinese manufacturer sees it differently.

Svolt Energy announced on Weibo that it has rolled off the assembly line in Changzhou, Jiangsu province, its first mass-produced 100-kWh “Dragon Armor” semi-solid fast-charging battery packs.

The battery maker said semi-solid batteries will remain a core, permanent option for electric cars for years to come. Semi-solid batteries use a blend of liquid and solid electrolytes to move ions, unlike all-solid-state designs that depend entirely on solid materials. 

The technical specifications reveal ambitious performance targets. Built on a 900-volt architecture, the pack reportedly supports extreme 6C fast charging. Svolt claims it can pump 311 miles ( 500 kilometers ) of range back into a vehicle in just 12 minutes.

This speed usually raises immediate thermal and safety concerns. To tackle heat, Svolt layered liquid cooling across both the top and bottom of the pack. Inside the cells, a proprietary separator transfer-printing technology stabilizes internal ion transfer during rapid power dumps. 

Outside, six layers of underbody armor line the base. The company claimed this structural shell delivers three times the impact resistance required by China’s national safety standard.

Longevity is equally central to the pitch. Reportedly, Svolt uses high-speed cell stacking to deliver a cycle life of over 3,000 charges. This roughly translates to a theoretical lifetime driving distance of more than 0.6 million miles (1 million kilometers).

But healthy skepticism is warranted. Svolt has not disclosed the exact testing conditions behind its range-recovery numbers, nor has it revealed the size of this initial production batch.

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