I took apart a 9,000,000mAh power bank from eBay to learn the truth - here's what's inside

An investigative ZDNET piece tests a power bank advertised at 9,000,000 mAh for ~$10 and finds it arrived dead, had a disconnected battery lead, and contained three no‑name 18650 cells totaling only ~6,000 mAh—far below claims—highlighting safety risks from poor construction and recommending spending slightly more on reputable options (e.g., Baseus, Anker) for accurate capacity and reliability.