What is a cmos battery?

Answer Your CMOS (complementary metal-oxide semiconductor) battery keeps your computer running as normal. During shutdown, the CMOS battery maintains the information the computer needs to boot up when you... Read More »

Top Q&A For: What is a cmos battery

What type of battery is a CMOS battery?

A CMOS battery is a small button-style battery located on a computer's main circuit board. It runs the clock and important start-up memory while the computer's power is off. Most CMOS batteries are... Read More »

Do some laptops not come with a CMOS battery?

All new laptop computers come with a CMOS battery. A CMOS battery is required to supply power to the CMOS (Complementary Metal Oxide Semiconductor) chip when the laptop is powered off. The CMOS chi... Read More »

Where is the CMOS battery on an HP 6220?

The CMOS battery for the HP Compaq 6220 notebook computer is located on the motherboard. To access it, you must disassemble the laptop and remove most of its components. The CMOS battery provides e... Read More »

What is the function of the CMOS battery?

Just as a watch battery keeps time ticking, the CMOS battery helps preserve the computer's calendar and hardware settings when the computer is turned off. CMOS batteries tend to last for four to se... Read More »