I have found that a DeWalt 20v circular saw with a "Diablo" carbide tipped combination blade cuts aluminum incredibly well.
The low RPM's of the battery saw are more suited to AL cutting and the blade doesn't get hot.
I have cut hundreds of feet of 1/4" AL with a single blade. 1/8" is a little more difficult, the carbide plywood blade works better and you have to be careful with the feed speed, but the cuts are clean and fast compared to zip disks and band saws, a shear would be nice.......
PS. after marking the cut lines with a sharpie, or awl, rub wax on the line to lubricate the blade as you go....