Nonvolatile BIOS memory: Difference between revisions

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=={{anchor|Rechargeable CMOS battery}}CMOS battery==
{{multiple image|direction=horizontal|image1=Battery-lithium-cr2032.jpg|caption1=[[CR-2032]] button cell, the most common CMOS battery|image2=NiCd VARTA battery leakage on circuit board (IMG 3313).jpg|caption2=[[VARTA]]-manufactured [[Nickel–cadmium battery|Ni–Cd]] barrel battery that has leaked onto the mainboard of a [[synthesizer]] and damaged legs and traces|total_width=440}}
The memory battery (aka motherboard, CMOS, [[real-time clock]] (RTC), clock battery)<ref name=whatiscmos /><ref>[http://en.kioskea.net/faq/625-replacing-the-battery-of-your-motherboard-cmos-battery Ask a question » Replacing the battery of your motherboard (CMOS battery)]</ref> is generally a [[CR2032]] [[lithium battery|lithium]] [[coin cell]]. This cell battery has an estimated life of 3three years when [[Power supply unit (computer)|power supply unit (PSU)]] is unplugged or when the PSU power switch is turned off.<ref>
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