DIY appliance backup power from repurposed 48v power tools.

I dearly love my Snapper 48v mower and power tools, but they don’t offer an inverter that can run off them like some other power tool companies. So, when I saw a cheap power tool and the batteries go on sale, I figured I’d invalidate some warranties and reconfigure them into a home-build power system. Could I just buy a set of tools that includes an inverter? Sure. But where’s the fun in that? Also, I’ve already got a bunch in this line for my electric mower and I’m very happy with the performance.