I do not own … rather I do not know what users are doing over there? Are Librem 14 users using USB-IF certified PD 20A/5A cable at all, etc.? Actually please understand this quite useful information: “If your laptop turn off automatically for several seconds or minutes, it is maybe caused by overcurrent/lowcurrent protection. If automatic turn off is caused by overcurrent protection, please close the screen of your laptop to continue charging.” Now let me “translate” this for you: “If your/used power supply (or powerbank) is not capable to provide enough current to your Librem 14, especially under 20% of its registered battery capacity, it is finding itself in, or rather initiates overcurrent protection on his side and not able to (re)charge your laptop with empty Li-ion battery (that might be easily requesting more than 20V/4A of juice from probably not adequate power supply.” Such behavior have nothing to do with the Librem 14 itself, IMO and hope that my approach isn’t misleading in any way (if not helpful).
@EasyMac308, please search further for another adequate solution/understanding within this Forum. For example read this post:
P.S. Just my two cents, not even close to some/relevant expert opinion.