20Ah for 23 bucks? Seems like it's almost too good to be true. Wouldn't surprise me if it was just half that, would explain the price and weight.
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The weight difference to the Nitecore pack being mentioned is only ~15g.
This seems off, either nitecore is putting a very heavy premium on their products while not using obvious weight saving options, or the Haribo pack simply will not deliver on capacity