EVE Energy Rolls Out 1,045 Wh/L Solid-State Cell and Sodium-Ion Pack
EVE Energy launched its Longquan No. 3 2.0 all-solid-state cell at 1,045 Wh/L for brain implants, plus a sodium-ion solution for e-two-wheelers claiming 10,000 cycles.
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Key facts from the Oct. 20, 2026 EVE Energy rollout in Chengdu, as reported by Gasgoo and EnergyTrend.
Illustration (AI-generated)
EVE Energy rolled a new all-solid-state cell, the Longquan No. 3 2.0, off its line at the Chengdu base on Oct. 20, 2026, with a stated volumetric energy density of 1,045 Wh/L, according to Gasgoo and EnergyTrend.
EVE has moved its Longquan solid-state series from drones and robots to brain-implant cells in 13 months.
Illustration (AI-generated)
The anode-free cell is a titanium-cased button, 23 mm across and 4 mm thick, built for implantable brain-computer interfaces. EVE says that density is about 40% above conventional liquid-electrolyte cells, and that the solid electrolyte removes the leakage and thermal-runaway risks of a liquid one. The company also signed cooperation agreements with Sichuan Provincial People's Hospital and a second partner to cover research, industrialization and clinical use; the two outlets name that partner differently (SceneRay and Jingyu Medical).
The ceremony also covered two other cells: a polymer-oxide all-solid-state battery and a solid-liquid hybrid battery. Gasgoo calls the first a "polyoxygen" battery, so the exact chemistry name is not settled. Neither report gives capacity or energy-density figures for those two cells.
