
iFixit tore down the Oura Ring 5, a $400 smart ring, and found it nearly impossible to repair. The metal-and-epoxy construction required extreme heat and force to open, destroying the 10.5 mAh battery in the process. The device cannot be reassembled or remain waterproof after opening, raising questions about EU battery regulations.
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Summary by ByteBrief
Home Batteries: How They're Installed and How Much They Cost