Battery size and nominal capacity are things we need to care about. If you are stuck with opened computer housing and don’t have exactly the battery model you need, try to use one of the battery types which is close enough.Ĭoin battery CR2032 has 220mAh (nominal capacity), 20mm in diameter, with 3V output. However, sometimes we start doing replacements without preparation. While approaching this problem, we all want to replace the current battery with an appropriate one. Changing BIOS battery, which one to choose? Fortunately, the BIOS battery is the biggest one and we can use another CR model if necessary. If you look at the table above, the diameter is the same for all 3 models, while the high size is a bit different for each model. You need to prepare a new battery, take out the old one, and firmly place a new CR2032 battery. Replacing batteries on the motherboard is quite easy. Still, sometimes we need to replace the battery from the motherboard, to avoid seeing BIOS warnings while the system is booting.
A small battery can operate for a long time in that kind of environment. This battery’s main purpose is to keep BIOS settings, even if the computer is unplugged. In a modern computer most likely you will find the CR2032 coin battery model. Specification table for coin batteries CR2032, CR2025 and CR2016 Model Not only CR2032, CR2025, CR2016 are different in size, they do have different specifications also. However, there are some crucial differences. Small coin shape batteries are hard to distinguish on a first look. CR2025 and CR2016 models are used inside remotes and mostly in modern quartz watches.ĬR2032 battery is used in CMOS “Complementary Metal Oxide Semiconductor” technology of production integrated circuits. Small BIOS battery is also known as a Button cell, CMOS battery, coin battery, etc… Most modern computers are using the CR2032 battery model on their motherboards.
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