I have a NexGen 586 90mhz motherboard w/ AMI BIOS that will not keep time when the machine
is off. I have put in a 3.6V external battery (maybe need a 4.5 or 6volt?) that now loses .5hr every 2.5hr
Before I replaced the battery, the clock did't advance at all when the computer was off. Also, I was told
to leave the internal batteries in place.