I notice you’re asking about a “better fullmazacom 300 portable” — but after checking, I couldn’t find any verified product by that exact name. It’s possible there’s a typo, or it’s a very niche/off-brand item.
Usually includes AC outlets, USB-C (PD), and DC "car" ports. Solar Ready: better fullmazacom 300 portable
The performance of these units is defined by their storage capacity and output technology: I notice you’re asking about a “better fullmazacom