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| Powerbank with two different current outlets |
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| NiHaoMike:
I have one that has a "1A" port and a "2A" port but they're electrically identical in how they're wired. Most likely it's so the product would sell to the average consumer who has a slight understanding of electrical ratings and thinks that they must use a 1A supply for their 1A device. |
| PlainName:
--- Quote --- thinks that they must use a 1A supply for their 1A device --- End quote --- That sometimes suckers me too :palm: But there are some products that rely on the PSU to limit current, and which may break or even burst into flames if you use a larger capacity supply. One I have is an electric screwdriver which comes with a 0.5A USB charger, and warning to use only that PSU. I plug it into a decent supply and it happily sinks 2.5A while charging. Considering it must be a small battery and is fully enclosed in the handle, that doesn't strike me as being particularly good. |
| Psi:
It's probably more because various resistor values signify different standards that each have a specific maximum current. So as an example.. This socket is for the LG 2.1A standard, and this other plug is for the Samsung 1A standard. Also, the user may know they need a socket for their device that is "fast charge 2.1A" but they may not know anything about how current works and so might think a 3A socket wont work because they need 2.1A etc.. |
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