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Amazon.com: Rome Tech RTC CMOS Battery for Dell Latitude M90 / Dell Precision M20 / Dell Precision M2300 / Dell Precision M4800 / Dell Studio 1435 - Laptop Backup BIOS CMOS Battery
Are CMOS batteries made specifically for PC's? Could I use another watch battery assuming it fit the slot and was rated for 3V? - Quora
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