Most power banks solve the battery problem and create a second one: a brick in one pocket, a cable trailing to the phone in the other. This one snaps magnetically to the back of a compatible phone and stays there. You keep using the phone normally while it charges, one object instead of three.
At 3.74 x 2.55 x 0.55 inches and 120 g it is roughly a stack of credit cards, thin enough not to fight a jacket pocket and short enough not to cover the camera. The 5000 mAh cell is sized for a day rather than a weekend — a full phone top-up and change.
Wireless delivery runs at 5W, 7.5W, 10W or 15W depending on what the phone negotiates. The USB-C port adds 20W wired output, and because wired and wireless work at the same time, the pack charges two devices at once. Eight low-temperature cores plus overcharge, over-voltage, over-discharge and short-circuit protection keep it cool while it works.