Due to the two major revisions of the A3010 motherboard, the battery location can significantly differ. Both types of A3010 can accept the same types of battery and the photo's below show two different ways of replacing the on board battery.
I fitted the non-rechargeable battery backup solution to Andrew McConville's A3010. The original battery is located in the center of the A3010's PCB next to the Adelaide board.
A non-rechargeable solution can make life easier when it comes to replacing the CMOS battery in the futur