Could or would you wire in a power inverter to run say ah impact or skill saw? And if so what power inverter would run such ah tool?
Search the web and you'll find 24v inverters. Whether they'll run a power tool like a circular saw depends on the size of the inverter and how long you want to run it. Quality inverters that will run that kind of power are not cheap. Cheap inverters may claim to run, say, 5000 watts, but in reality, they will do that for a few months then die. And I mean a few months of occasional use. Any heavy use and they'll quit in short order.
I have a lot of experience in telecom with teams doing mobile testing, driving around in vans with multiple laptops and other devices doing testing. We typically run inverters, and of course, we calculate the maximum load and size the inverters to exceed that.
What I have found is that even quality inverters won't last more than about a year of constant use unless they are sized to DOUBLE what you think you are going to need.
You also need to account for STARTING wattage vs. RUNNING wattage. All devices, especially electric motors, use more power to get started than they do to keep running. For example, say you want to run a refrigerator that takes 700 watts to keep running. You figure a 1000 watt inverter shoujld be good. Nope. It won't even START with a 1000watt inverter, because it needs 2200 watts to start. See this table:
www.2kstore.com/gen/g5.htm
So, that table says you need 1400 watts to run a circular saw, but 2300 to start it. I wouldn't try to use anything less than a 4500 watt QUALITY inverter with that, unless I were only going to use it for a few minutes at a time, now and then. Even then, if I wanted to do any serious work with it, like building a deck or something, I'd get a small generator.
So, it all depends on what you want to run and how often and how much money you want to spend.