Asus motherboard batteries

The battery should be marked that's in the mobo now. If there's no battery in it, repost.

dont these batteries last for about 50+ years or something?

The best a cmos/clock battery can do is about 7 years. Typicall the coin type lithium batteries last 3 to 5 years depending of how much the computer is on. If you have a bad battery maybe a couple of months. Bad circuits or handling can reduce the life.

Desktop Motherboard battery is always the CR2032 model (flat, and about the size of your thumb). Normally it would last about 3-5 years. When you get the cmos checksum error during bios post (or slowing time), that's the time to change..... Only some of the old pre-pentium 1 motherboard uses the capacitor like battery......

The earliest computers had no batteries, no cmos, no clock. Then came nicads and lithiums. Some manufacturers tried 3 or 4 AA's.