A jigsaw is exactly the type of sawing machine where you don't want a clumsy cord bothering you when you're using it. Detailed sawing like cornering is easier when you don't have to worry about an obstructed power cord. That's why it can be useful to buy a battery-powered jigsaw. Besides, it's easy to bring a battery-powered jigsaw with you to places without a nearby power supply. And if you choose a battery jigsaw from a brand you already have a suitable battery from, the choice is made quickly.