Hey Andrea,
So right now there is no PDF for Charge, but I'd love to take the time to work on that in the future. As of right now, the only place to read Charge is on the Fari Community. That being said, the Charge SRD is available as a PDF here and so is Dash, the condensed version of Charge which you can find here as a PDF.
Also, thanks for the ping about the character sheets link, I've fixed it to use the new url which is: https://fari.community/creators/fari-rpgs/projects/charge/character-sheets