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by cure 1631 days ago
Mind you that's 3100mAh at 12V. That's roughly 7400mAh at 5V (USB voltage).
1 comments
colanderman 1631 days ago
That is assuming a DC-DC converter. 3100 mAh is 3100 mAh regardless of voltage if the charging functionality uses a cheaper/simpler linear regulator.
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cure 1630 days ago
Indeed! That's a good point. If it uses a linear regulator, I guess the thing would produce quite a bit of heat when drawing power from the USB ports - the extra energy would just be converted into heat.
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