CR2032N CMOS battery is a specific type of CR2032 lithium coin cell battery. It’s primarily known for its use as a CMOS battery in computer motherboards, though it’s also used in many other small electronic devices.<\/p>\n
Feature Detail
\nType Non-rechargeable Lithium Manganese Dioxide coin cell
\nNomenclature C (Lithium), R (Round), 20 (20mm diameter), 32 (3.2mm thickness)
\nNominal Voltage 3.0 Volts
\nTypical Capacity \u223c210 to 240\u00a0mAh (Milliamp-hours)
\nTypical Lifespan (CMOS) 3 to 5 years in a computer motherboard<\/p>\n
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\nWhat is a CMOS Battery?
\nThe CMOS (Complementary Metal-Oxide-Semiconductor) battery is a small, round battery found on a computer’s motherboard. Its essential function is to provide continuous, low-level power to the CMOS chip (or Real-Time Clock, RTC) to ensure it retains critical system information even when the computer is turned off or unplugged.<\/p>\n
Key information the CMOS battery helps preserve includes:<\/p>\n
System Date and Time<\/p>\n
BIOS\/UEFI Settings (e.g., boot sequence, hardware configuration, and passwords).<\/p>\n
If the CMOS battery dies, the computer will lose this information, often resulting in:<\/p>\n
The system clock resetting to a default date (like 01\/01\/2000) every time the computer is powered off.<\/p>\n
BIOS settings reverting to their factory defaults.<\/p>\n
CR2032 vs. CR2032N
\nThe CR2032 is the industry standard designation for the physical size (20mm diameter, 3.2mm thickness) and chemistry (Lithium Manganese Dioxide).<\/p>\n
The “N” suffix (CR2032N) is an additional designator used by some manufacturers. While the battery is electrically and physically interchangeable with the standard CR2032, the suffix may indicate:<\/p>\n
Compliance with a specific standard: It may denote compliance with the IEC 60086-3 watch battery standard or other minor manufacturing variations.<\/p>\n
Discharge Rate\/Characteristics: Other suffixes (like H, M, or L) are sometimes used to indicate high, medium, or low discharge rates, but the “N” is less standardized.<\/p>\n
In practical terms for computer use, the CR2032N is fully interchangeable with a standard CR2032 battery.<\/p>\n","protected":false},"excerpt":{"rendered":"
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