How to solder banana plugs depends on the type of banana plug and the thickness of the wire.
Banana plug is a cylindrical, single-wire, male connector used for joining wires to electrical equipment.
It is typically used for audio or video connection such as to connect speaker, amplifier, or other electronic devices. A banana plug has a similar shape to an RCA plug.
The most popular in the USA
![Weller WE1010](http://soldering-irons.com/wp-content/uploads/2021/03/WE1010-Weller-Soldering-iron-300x190.jpg)
Weller WE1010 solder station
![Hakko beginner soldering iron](http://soldering-irons.com/wp-content/uploads/2021/06/Hakko-beginner-soldering-iron-300x222.jpg)
Hakko FX-888D soldering station
![](http://soldering-irons.com/wp-content/uploads/2021/06/WLC100-Weller-beginner-soldering-iron-300x291.jpg)
Weller WLC100 (cheap solder iron)