Helpdesk

I have recently got the Beebase and Beebase PCB I try my PCB with AAA battery comes with shipment. But it does not seem to last long enough, I only do a few things, the battery seems dead. I would Like to connect the battery bracket with external battery case, I wondering how can I do that? is it 1.5V or 3V total? and where should I connect to from bracket contacts? Simon