Amazon has a mouth-watering deal on the Anker Zolo Power Bank with a 10,000mAh battery capacity. With support for 30W fast charging, a braided integrated charging cable, and two additional ports, the limited-time deal is a steal.https://www.notebookcheck.net/Anker-Zolo-Power-Bank-with-10-000mAh-capacity-and-an-integrated-cable-is-down-to-12-93-50-off.1029110.0.html
Anker Zolo Power Bank 10,000mAh is just a little larger than a credit card with respect to its width and breadth.
...and about 25x the thickness of a credit card, but hey, that' irrelevant detail! ;)