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TL;DR

• Multiple Galaxy Watch 9 and Watch Ultra 2 owners report that charging takes anywhere from two to four hours, far exceeding Samsung’s advertised 80-90-minute charging time.
• Aggressive thermal throttling and charger compatibility quirks appear to dial back power, forcing some users to rely on external cooling hacks.
• While the problem doesn’t impact every user, we have reached out to Samsung for official comment.

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The rollout of Samsung’s latest wearables, the Galaxy Watch 9 and Galaxy Watch Ultra 2, has brought plenty of excitement to wrist-tech enthusiasts, but a growing number of early adopters are hitting a frustrating wall. Despite promises of quick top-ups, users across Reddit and official forums are experiencing painfully slow charging speeds that stretch far beyond Samsung’s official figures.

Samsung officially rates the 40mm Watch 9 at 80 minutes for a full 0-100% charge, while larger models like the 44mm Watch 9 and Watch Ultra 2 are rated for 90 minutes. However, real-world experiences tell a drastically different story. A 40mm Watch 9 owner documented that a full cycle took well over two hours, while a Watch Ultra 2 user reported waiting a whopping four hours under normal ambient room conditions.