Similar to its predecessors, Passport Go started from Kickstarter  where it raised a total of US$271,092 from 5,323 backers out of their initial goal of US$30,000.
The project started on 29th May 2019 and was successfully funded on 30th June 2019. It was shipped to me on 19th September 2019, and I received it on 26th September 2019.
Since I am a fan of Zendure products, I backed the project without much hesitation. I got the Super Early Bird reward level for US$29 (S$40) with shipping to Singapore cost an additional US$5 (S$7).
Passport Go has a similar design with the original Passport. Even the dimensions and weight are the same. I would consider Passport Go as Passport 2.
The most significant upgrade is the introduction of Gallium Nitride (GaN). GaN has higher efficiency, produce less heat, and tolerate higher current. Because of that, it allows for the charger to have a smaller form factor. You can check out The Verge’s article on GaN here .
Instead of four USB-A ports found in Passport, Passport Go comes with one 30W USB-C PD port and three USB-A ports.
Both Passport and Passport Go comes with an auto-resetting fuse and is not grounded.
When compared between Passport Go and Passport Pro, Passport Pro has an 18W USB-C PD port, has a separated EU adapter and is grounded.