This is a portable soldering solution - when you are not near outlet you can just use power bank for it!, it is working perfectly - 60W soldering solution:
See here: TS100 Soldering Iron - YouTube
It has many setting capabilities for: power saving, temperature setting, firmware update, temperature step, battery minimum voltage protection and many more.
Also the TIP can be replaced easily
You get an LCD with reading of temperature, voltage of power supply and more