Galaxy S27 Ultra and Pro batteries surface in certification

Certification databases are becoming one of the earliest public windows into upcoming smartphone hardware. The Galaxy S27 Pro and S27 Ultra batteries recently appeared in Safety Korea with photos, and their model numbers line up with the SM-S957 and SM-S958 identifiers for the two devices. Both batteries are made by Zhuhai CosMX Power in China, which gives supply chain watchers a concrete detail to follow. The capacities are not legible in the published photos, so the most important spec remains unconfirmed. For anyone working in mobile hardware, procurement, or product planning, these filings are a reminder that component sourcing often reveals more than marketing does. We will be watching for the capacity figures as the launch cycle moves forward.