I recently acquired a Gemlight GMB-486UNP motherboard with a 486DX2/66. Of course it came with our friend the Varta barrel battery, which had leaked significantly all over itself but not spread to the board. I removed the battery and the board does still boot up, but before I throw it in a case I need to replace the battery... and I'm not sure what to replace it with. There is an external battery header at J2, which I thought of attaching a CR2032 carrier to as has been shown in previous threads I have read here... but the board manual says that pin 1 is "VDD(6v)". That seems particularly high and rules out a 3V CR2032 in a carrier, or similar batteries. What exactly does it expect to be connected there?