I opened a 9,000,000mAh power bank from eBay to learn the truth - here's what I saw

I often get asked about cheap power banks with hard-to-believe claims. Well, I bought one and tested it.

Feb 12, 2026 1

I opened a 9,000,000mAh power bank from eBay to learn the truth - here's what I saw
I often get asked about cheap power banks with hard-to-believe claims. Well, I bought one and tested it.
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