Enovix announces results from indpendent testing of AI-1 smartphone battery

Enovix (ENVX) announced that Polaris Battery Labs has confirmed the Enovix AI-1 smartphone battery as the highest energy density cell ever reported for a smartphone. First unveiled in Q2 2025, the AI-1 platform combines advanced materials, micron-level design rules, and fully automated manufacturing to deliver step-function gains in energy density and charging speed for high-volume consumer applications. Polaris testing results across tested cells for the Enovix AI-1 smartphone battery include: Average volumetric energy density of ~919 Wh/L – among the highest ever reported for a smartphone battery; Fast charging at 3C rates – time reaching 20% charge in 3.8 minutes, 50% charge in 12.3 minutes, and 100% charge in 39.5 minutes. “Independent third-party validation of AI-1 is a critical milestone for Enovix,” said Dr. Raj Talluri, President and CEO of Enovix. “It proves that AI-1 is a commercial-ready product that redefines smartphone battery performance. With shipments now completed to a third leading smartphone OEM, this confirmation strengthens our position as we deliver unprecedented energy density and charging performance with a truly differentiated solution.”