I gave my Hercules circular saw a bit of a workout last night. There was a sheet of 3/4" birch plywood that I was ready to rip along its length. Using a few rebate checks, I grabbed a Masterforce 48-tooth laminate blade from Menards. I already had a Masterforce finish blade loaded in my Worx Exactrack saw, and I had been pleased with the results. The laminate blade had a higher recommendation for plywood than the finish blade, so it seemed like a good choice.
I set up the board on the floor on top of some styrofoam sheets, locked on my 100" clamping cutting guide, and fired up the dust hose.
Things did not start out well, as the saw moved slowly through the 3/4" ply. This wasn't Baltic birch, but it was 11-layer "classic birch" from 'Nards. Worse, the saw choked and stalled within the first two feet. It would continue choking out throughout the rest of the cut--at least three more stalls before the battery died at 7'11". It just died! It couldn't complete the eight foot cut!
Now, it was loaded with a 2.5AH battery instead of the 5AH, but I honestly hoped I wouldn't have to upgrade to the more expensive battery in order to rip one sheet of birch plywood. I also should note the blade I was using had kerf almost twice as wide as the finish cut blade I had been using on my Worx saw, but it's still less than 1/8". The battery was ripping hot too.