How Long Does the 3V Motherboard Battery Last?
You might ask “What is the 3V motherboard battery”? On the majority of PCs the motherboard holds a +3 Volt Lithium Battery which is used for two functions. Firstly it keeps the computer time updated. Secondly, on older PC’s it keeps the BIOS settings (Low level start-up instructions) in memory. By the way, on most modern PC’s the time is updated from the web. The 3V battery just maintains the time when the PC is powered off. This is useful as the motherboard clock is not very accurate, easily losing a couple of minutes per day. If you have your PC case off you will see something on the motherboard that looks like a small thick silver coin. That is the battery. There are other types of battery used on newer machines (Ni-Cad, NVRAM) but these much less frequently found and so I won’t discuss them further. So how long does it last? Anything from 3 to 9 years if you search this question on Google. Everyone has a different opinion. In my experience about 6 years is the average. It’s basical
