Alex Eames has done his usual sterling power-measurement job on the day after the launch of the Raspberry Pi 4. Unsurprisingly, the Pi 4 uses more power than older models, and is far more suited to being a desktop model than a portable, battery-powered unit. For that, you’re still better off with a Pi Zero or one of the ‘A’ models.
You can check out Alex’s power measurements over on the RasPi.TV blog.