Wattage Tanget Help
 

So I'm halfway through building the sucker and realize the battery I have isn't going to fit through the access hole. So can anyone help me out with the battery size specs, actually just the length of the pack so I can finish building it. I ordered the right battery, but they weren't sure of the size, and I don't want to wait to finish building it. I was surprised that the people at Wattage couldn't help me, or didn't want to help me. Oh well, if someone else knows the battery I'm talking about please help me, thanks.