How to clean out a rusty fuel tank in a simple way

Removing rust from a motorcycle fuel tank through hydrolysis is an effective method, although it requires some time and effort.
Compared to other rust removal options that use acid or more harsh chemicals, this process is very affordable, easy, and safer.
You need patience, a 12V battery charger, washing soda (sodium carbonate), distilled water, and a strip of mild steel.
My R15 v2 gas tank is being used to demonstrate how electrolysis can remove rust from the inside.