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

I often get asked about cheap power banks with hard-to-believe claims. Well, I bought one and tested it. Here's my buying advice.

Feb 11, 2026 2

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