Samsung rates its glasses at up to nine hours on a single charge. The case holds up to seven more full charges before it needs power itself. Won-Joon Choi, the company's mobile chief operating officer, gave CNET the same two numbers on announcement day.
A 155mAh battery, a measure of how much charge a cell holds rather than how long it lasts, has been attached to these glasses since a Wellsen XR report in November 2024, and it reappeared in spec sheets through April 2026. It matches Ray-Ban's glasses to within a milliamp-hour.
A separate battery leak in March 2026 described the display-equipped model rumoured for 2027, not the pair shown in July, per 9to5Google.
Nine hours is a figure a buyer can hold a day of wear against. A capacity number cannot be, because how long a battery lasts depends on how hard the hardware works it.
Choi gave the number on 22 July. The 155mAh figure had been in circulation for twenty months.