Follow this guide to fully disassemble your FixHub Portable Power Station.
For an even closer look, [linkdocument|https://www.ifixit.com/Document/MeQmLlLKT2LSSKFY/Portable-Power-Station-Electrical-Schematics.pdf?referrer=wiki%3A57061039472|check out the electrical schematics here|new_window=true].