Got my second battery in and finished up the wiring. Made more use of these wire nut clip splicer (or whatever they are called). They not only connect wires, but also secure them. Once it was all wired up I couldn’t resist a quick test. The results were mostly good, and I would say everything functions well, but I ran into a couple of hitches.
First, I was worried about the swinging of the blade unit. It did tilt forward and “dig in”, but nothing broke. I probably need to put in a spring to keep the blade unit from swinging back too far. I’m also considering cutting some of the front faces of the blade shields down a bit, exposing the blades, at least on the front side. They are underneath the mower and shouldn’t be a safety problem. Should allow better cutting. I’ll note string trimmers that use these blade do this.
Second, I blew another fuse. This is the one I have on the big line connecting the batteries. I bumped it up to 35A. It blew when I tried to move forward from a stop in the grass. Not sure how to handle this. Tempting to remove the fuse and rely on the circuit breaker.