Hi
On my fit-PC2i, I accidentally torn off the BIOS battery when trying to desolder it. Now I have to find another “pin” on the print where I can attach the + from the battery. I can’t use the place where the battery has been. The - I can find everywhere. There will be a reward to the person who can help me get the PC working again. See picture attached. 

You can use J4B2 TPs. One is GND, other is 3.3V_RTC :
http://fit-pc.com/wiki/index.php/Fit-PC2i_Troubleshooting