Abstract: The present invention features a portable branding iron system. The system includes a handle with a handle connector, a built-in rechargeable battery, a heating coil, and a controller. A backing plate is removably connected to the handle via a threaded rod. A patterned metal, such as raised letters or logo, and an optional rotatory numbers are removably disposed on the backing plate. A power switch is disposed on the handle to turn ON or OFF the branding iron. A heat sensor is disposed on the handle connector and sends the temperature signal to the controller to power on one of a plurality of a temperature indicator LEDs.