I bought a battery saw primarily to carry in my truck to cut deadfalls out of the road. Not having to worry about stale gas and 2-cycle oil leaking in the truck is a big plus. And I carry an impact wrench in case I need to change a tire in the woods, which uses the same battery.
I used to work for the US Forest Service. Since I hadn't been to the right classes, I wasn't allowed to carry a chain saw or crosscut saw in my work truck. I had gone up to check soil conditions at a lookout and driven through a lot of snags going up. When I was at the lookout, the wind came up, and I could hear snags falling all over the place. On my way off the mountain, I had to drag a few trees which had fallen, out of the road with my tow strap. Finally ran into one that was 14 to 16-inch diameter and wedged in between live trees that I couldn't drag anywhere. It was after 1700, so dispatch had closed for the day and gone home. Nobody to come rescue me. Spent three hours cutting through the deadfall with a 14-inch carpenters toolbox saw, blistering both hands. And, I still couldn't drag the damnable thing out of the way. Ate an MRE, wrapped up in a fire shelter, and spent the night. Next morning when dispatch came back on, I called in and got a couple of sawyers headed my way. They had to cut their way in through deadfalls on the road below me. Finally got out at about 1300.
Big stink ensued. My supervisor was in trouble, because they had gone home without knowing I was back to pavement safe. I found a "Carpenters Green Wood Saw", a 34-inch version of a one man crosscut saw, and skirted the rules about me having a crosscut saw. Below 36-inches the old catalogs called them Capenters saws, and at 36-inch they became a timber tool for felling trees.
I always carry a chainsaw in my personal vehicles now.