Meta· Llama / infrastructure

How Meta Engineered Ultra-Narrow Batteries for AI Glasses

Smart glasses like the Ray-Ban Meta and Oakley Meta Vanguards need to pack enough energy to power features like cameras, speakers, AI workloads, and even a display. But it all has to fit into the glasses’ temple arms. So how do you place a battery with enough power to run a pair of smart glasses all day into a form factor narrower than an adult’s pinky finger? You have to rethink how batteries are made. In episode 86 of the Meta Tech Podcast , host Pascal Hartig sat down with Karthik and Myuran, the engineers behind Meta’s steel can battery technology, for a conversation on powering the newest and next generation of wearables. Why Traditional Batteries Fall Short for Smart Glasses Traditional pouch cells — the batteries in most phones and laptops– can’t cut it for devices like smart glasses because they’re difficult to reshape and shrink down. Their folds waste volume, their tolerances eat into precious millimeters of space, and at smaller sizes they can have difficulty providing peak power for multitasking (for example, if someone is using the camera and asking the AI model to perform a task at the same time). …

Announced

23 Jun 2026 16:00 UTC