cmos bios battery

  1. Rachel Anne289

    Use CMOS Bios Battery in Radio Circuit

    0 I could imagine the CMOS Bios Battery circuits are quite similar on all recent mainboards. What does it look like and how does it work? Background: My mainboard started draining the bios battery (an ASRock H55M). I inserted a fresh battery with 3.3v. It only measured 2.9V when I removed it...