I’m trying to power the Jetson board on a robot using a battery. I know that it takes 12-19V to run, but how much power/current does it draw? The battery that I have is a 4S (14.8V).
If I remember correctly, the PSU supplied with the Jetson is rated for 60W, however you only reach it with peripherals plugged in (e.g. SATA drive and USB powered devices, etc…). Usually the power draw is way lower, e.g. the board draws up to 12W for heavy computer vision tasks (see here for a reference https://elinux.org/Jetson/Jetson_TK1_Power).
The actual power draw depends strongly on your use case, but if your batteries are rated for at least 1A discharge you should be fine in most cases.