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I see that this battery is 8200 mAh, but capacity is above 5000 (see in "Specifications" tab. Or for example, somewhere I saw Laptop battery which is 7800 mAh but the real is 6000-6600 mAh.

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  • Just so you know, the capacity printed on a battery is only nominal, you should always expect measured values to have some error from the nominal value when it comes to measuring anything. In your first example, I would explain that as a typo or failure to accurately describe the product being sold on the website. And on your second example, how did you measure the "real" capacity? – Romen Dec 16 '19 at 16:29
  • aliexpress.com/item/… It is written in specs as "Full capacity" but you answered to my question. Thanks – Pranciskus Dec 17 '19 at 11:59
  • To be honest, I don't have much confidence in websites like aliexpress to get the specs written accurately for all of the massive variety of products they carry. For both of the links you have shared, I'm not 100% sure I can trust that the photos are the products being sold since they don't exactly match the specs in the pages. At that point you don't know whether to trust the photo or the spec table... I'd only trust whatever I can see in the photo if it is the product being sold. – Romen Dec 17 '19 at 15:17

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