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I just squinted myself into a headache and checked on all the charger thingies I have. They are from kindles, fires, nexus tablet, asus phone, etc. I don't have any that are 2.1a. The nexus one is 1.35a. I have one that I think went to the Echo Dot at 1.8. The small kindle ones are 0.85. I have another one that is 1.8 that I purchased in addition to the Nexus back when I got it.
Then some say different W, which I assume is watts? Does that bother any devices? I have one that says 9W and its a 1.8a.
I also have the Ikea Koppler 3 usp charger I used most of the time for all my stuff. I have no clue what its number is as it only states the total for all 3 usb, so I don't know how to calculate that stuff.
Compared to my kindles, my phone takes forever to charge up.
Its all too confusing to me. I just plug them in to whatever one is available at the time I need it. Haven't blown up a device yet. Most of mine are branded though, Amazon, or ikea or some other thing like that.
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