I supported the Hyperjuice on Kickstarter. (They successfully funded a slick USB-C hub with 2 USB 3, SD/mini SD card slots/ HDMI, gigabit Ethernet & a Qi wireless charging mat that supports multi angles and doesn’t get hot with a pass through USB-C port for power- albeit 49W) successfully earlier this year that I use daily and love, so I trust them. Build quality is great on it too!
That thing has 100W PD and passthrough charging. Same 26,000 mAh rating... getting mine in December.
https://www.kickstarter.com/projects/hypershop/hyperjuice-worlds-most-powerful-usb-c-battery-pack
There is a video review from another competitor website I won’t mention here, uploaded on YouTube as well