Power usage of running ESPhome with a single button

[glossy tundra]

Looking to run ESP home with just a single arcade-style button for a way to turn on/off a device under my desk. Debating if it’s worth running a cable to power it or just making a battery enclosure with some spares

[trail sentinel]

depends on the hardware you be using

Generally you won't get much idle time out of any battery if you don't put the device into sleep states without network connectivity