@gbraad Which makes no sense as a consumer product.
10Ah means 1 A for 10 hours, simple as that.
If it cannot do that it is mis-sold.
There is no reason for a consumer to know the internal cell voltage of such a device, and have to know this in order to understand the stated headline capacity.
@gbraad So require statement of energy (not power), e.g. J or Wh, not Ah. That would be the answer!
By requiring Ah for the cell, when someone makes cells that are 10V or 20V or 1V, suddenly all your requirements are messed up. If what matters is energy then expect energy units to be started.
But I am not an aircraft, I am a consumer, and I expect things stated in SI units to be correct. That is not correct. I cannot use 1A for 10h.
@gbraad I really dislike the "this has always been this way", and the argument "everyone does it wrong in the same way", as justification for doing things objectively wrong, to be honest.
@revk They just add up the mAh ratings of the individual cells. 10000mAh is likely to be 5 x 2000mAh cells at a nominal voltage of 3.6/3.7V. Bad maths indeed.
@revk I agree, but it’s also not just a battery in the same way that a car battery is. Amp-hours is just the wrong unit, especially given that there are portable power banks with built in mains inverters. Watt-hours would be much more appropriate.
@revk Plus actually measure it before relying on it? - t'interwebs are full of stories of things like this actually delivering a fraction of what you thought you'd paid for?
@steve Once upon a time, trading standards would have people that would buy shit like this, and test it with a calibrated 1A load and confirm if it does 10 hours or not, and then prosecute someone for mis-selling it. But those days are long gone.
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