For information, I bought the Anker Nano Power Bank 5 000 (22.5W, Built-In USB-C Connector). Not 30 W or slim as I was aiming for, but with this one I don’t need to think about a cable. Only weights 100 g, half of the weight of my slim 30w 10k power bank.

Thanks, but that one will be hard to fit in my pocket 🙂 I was looking for 5 000 mAh.

Thanks for the link, I already have a slim 10k power bank. I still think it’s too bulky for my use.

Nope. I need a small power bank that will get me around 50% as fast as possible on the go. I have a 10 000 ( 30w) but it’s too big and heavy.