At 12V I got 10 pieces as follows: 2@2.8A, 3@2.7A, 1@2.6A, 2@2.3A, 2@2.2A. The cooling effect depends on the current consumption (I assume linear). That means they're all about half as good as they claim to be. I didn't expect more for the price, so I'm not disappointed. For variable cooling that's fine as long as I don't need very heavy cooling.
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