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10pc Ml1220 Laptop Bios Battery Cmos Bdv Rtc Battery Cable Bios W/plug Battery 3v Lithium Button Cell Coin Rechargeable Battery - Button Cell Batteries - AliExpress
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Old laptop with dead battery and always draining the tiny RTC battery every few months? No problem, external CR123A to the rescue. : r/techsupportmacgyver
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