First post, by digistorm
Hi, I replaced the CMOS battery from my 486 board (Soyo SY-25K2) with a battery box with 3 AA lithium batteries. It had originally a Varta NiCD battery of 4.5 V. I connected the battery box to the designated connector.
At first everything looked fine, but yesterday I noticed that the clock was running behind, and tonight the BIOS lost all it's settings. Is it possible that I need a 4 x AA battery box delivering 6 volts? Or could something else be wrong? It did retain BIOS information for a short time, because the PC had been off before (but maybe not as long?). I also connected it as described in the motherboard manual, pin 1 positive, pin 4 negative.
If 4.5 V is correct, I should look into bad connections or whatever.