As a native English speaker, currently living and working in beautiful Shenzhen, I am perfectly positioned for your offline Q&A session. Not only have I used and am familiar with various power banks, but my unique perspective brings a deep understanding of the specific needs and expectations typically associated with European and American users.
My background in Physics also affords me an analytical perspective which can help decode the performance metrics of different power banks, such as charging speed, capacity management and portability. Furthermore, my interdisciplinary experience in projects similar to yours (e.g., neuromorphic computing at Intel Labs Munich and Quantum Machine Learning at Parity Quantum Computing) attests to my ability to deeply dive into technology-specific domains.
Lastly, since I am completing my B.Sc. in Shenzhen, within your given timeframe of March 10-12th, I can easily accommodate the schedule for your offline event. Notably, I've maintained excellent time-management throughout my career at Intel and Parity, ensuring timely delivery of perfect results for my clients — a reputation I intend to uphold with this project. Ready to share my firsthand experience and insights into this essential tech accessory!