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CMOS Battery
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Rome Tech CMOS Battery for Dell Alienware x51 R2 Andromeda / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for Dell Alienware x51 R2 Andromeda Battery Type: 2032 Pins: 2 Polarity:- / + Cords: 2 Cord Length сm: 4 cm Height: 3.2 mm Diameter: 20 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: Alienware x51 R2 Andromeda
$10.99 -
Rome Tech CMOS Battery for Lenovo ThinkPad X1 Carbon 8th Gen (Type 20U9, 20UA) / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for Lenovo ThinkPad X1 Carbon 8th Gen (Type 20U9, 20UA) Battery Type: 2016 Pins: 2 Polarity:- / + Cords: 2 Cord Length сm: 6.5 cm Height: 1.6 mm Diameter: 20 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: ThinkPad X1 Carbon 8th Gen (Type 20U9, 20UA)
$10.99 -
Rome Tech CMOS Battery for Dell Alienware M14x / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for Dell Alienware M14x Battery Type: 2032 Pins: 2 Polarity:+ / – Cords: 2 Cord Length сm: 6.5 cm Height: 3.2 mm Diameter: 20 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: Alienware M14x
$10.99 -
Rome Tech CMOS Battery for Dell Latitude 7390 / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for Dell Latitude 7390 Battery Type: 2032 Pins: 2 Polarity:+ / – Cords: 2 Cord Length сm: 4 cm Height: 3.2 mm Diameter: 20 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: Latitude 7390
$10.99 -
Rome Tech CMOS Battery for Dell Inspiron 2350 / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for Dell Inspiron 2350 Battery Type: 2032 Pins: 2 Polarity:+ / – Cords: 2 Cord Length сm: 4 cm Height: 3.2 mm Diameter: 20 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: Inspiron 2350
$10.99
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Rome Tech CMOS Battery for Dell Alienware x51 R2 Andromeda / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for Dell Alienware x51 R2 Andromeda Battery Type: 2032 Pins: 2 Polarity:- / + Cords: 2 Cord Length сm: 4 cm Height: 3.2 mm Diameter: 20 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: Alienware x51 R2 Andromeda
$10.99 -
Rome Tech CMOS Battery for Lenovo ThinkPad X1 Carbon 8th Gen (Type 20U9, 20UA) / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for Lenovo ThinkPad X1 Carbon 8th Gen (Type 20U9, 20UA) Battery Type: 2016 Pins: 2 Polarity:- / + Cords: 2 Cord Length сm: 6.5 cm Height: 1.6 mm Diameter: 20 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: ThinkPad X1 Carbon 8th Gen (Type 20U9, 20UA)
$10.99 -
Rome Tech CMOS Battery for Dell Latitude 7390 / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for Dell Latitude 7390 Battery Type: 2032 Pins: 2 Polarity:+ / – Cords: 2 Cord Length сm: 4 cm Height: 3.2 mm Diameter: 20 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: Latitude 7390
$10.99 -
Rome Tech CMOS Battery for Dell Inspiron 2350 / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for Dell Inspiron 2350 Battery Type: 2032 Pins: 2 Polarity:+ / – Cords: 2 Cord Length сm: 4 cm Height: 3.2 mm Diameter: 20 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: Inspiron 2350
$10.99 -
Rome Tech CMOS Battery for Dell Alienware M14x / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for Dell Alienware M14x Battery Type: 2032 Pins: 2 Polarity:+ / – Cords: 2 Cord Length сm: 6.5 cm Height: 3.2 mm Diameter: 20 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: Alienware M14x
$10.99 -
Rome Tech CMOS Battery for Samsung Chromebook XE303C12 / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for Samsung Chromebook XE303C12 Battery Type: 1616 Pins: 2 Polarity:+ / – Cords: 2 Cord Length сm: 9.5 cm Height: 1.6 mm Diameter: 16 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: Samsung Chromebook XE303C12
$10.99 -
Rome Tech CMOS Battery for MSI GS75 / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for MSI GS75 Battery Type: 1220 Pins: 2 Polarity:+ / – Cords: 2 Cord Length сm: 9.5 cm Height: 2 mm Diameter: 12 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: MSI GS75
$10.99 -
Rome Tech CMOS Battery for ASUS ROG Strix GL702 / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for ASUS ROG Strix GL702 Battery Type: 1220 Pins: 2 Polarity:+ / – Cords: 2 Cord Length сm: 6.5 cm Height: 2 mm Diameter: 12 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: ASUS ROG Strix GL702
$10.99 -
Rome Tech CMOS Battery for Lenovo ThinkPad T490s / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for Lenovo ThinkPad T490s Battery Type: 2016 Pins: 2 Polarity:- / + Cords: 2 Cord Length сm: 6.5 cm Height: 1.6 mm Diameter: 20 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: ThinkPad T490s
$10.99 -
Rome Tech CMOS Battery for ASUS Q535UD / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for ASUS Q535UD Battery Type: 1220 Pins: 2 Polarity:+ / – Cords: 2 Cord Length сm: 4 cm Height: 2 mm Diameter: 12 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: ASUS Q535UD
$10.99 -
Rome Tech CMOS Battery for Dell Inspiron 5100 / BIOS Battery
Rome Tech Replacement CMOS Battery / BIOS Battery for Dell Inspiron 5100 Battery Type: 1220 Pins Polarity: Cords: Cord Length сm: Height: 2 mm Diameter: 12 mm Warranty: 1 Year Brand: Rome Tech Compatibility Model: Inspiron 5100
$9.99
A CMOS battery, also known as a motherboard battery or RTC (Real-Time Clock) battery, is a small, round-shaped battery found on the computer’s motherboard. CMOS stands for Complementary Metal-Oxide-Semiconductor, which refers to the technology used in the battery’s construction.
The primary function of a CMOS battery is to power the CMOS chip on the motherboard, which stores the system’s BIOS (Basic Input/Output System) settings. These settings include information such as the system time, date, hardware configuration, and other essential parameters necessary for the computer to boot up properly.
When the computer is powered off or unplugged, the CMOS battery ensures that the BIOS settings are retained by providing a constant power supply to the CMOS chip. This enables the system to remember its configuration even when the main power source is disconnected.
CMOS batteries typically have a lifespan of several years, but over time they may gradually lose their charge or become depleted. When the CMOS battery is exhausted, the BIOS settings may be lost whenever the computer is powered off or restarted, resulting in issues such as incorrect system time, booting problems, or the need to reconfigure the BIOS settings every time the computer starts.
Replacing the CMOS battery is a straightforward process and involves opening the computer case, locating the battery on the motherboard, and carefully removing it. The most common type of CMOS battery is a small lithium coin cell, often referred to as a CR2032 battery. Once the old battery is removed, it can be replaced with a new one of the same type.
In summary, the CMOS battery is an essential component that provides power to the CMOS chip, ensuring the retention of BIOS settings when the computer is powered off. It plays a crucial role in maintaining system stability and proper functioning.