November 9th, 2012, 12:16 PM
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#26 (permalink)
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I looked up the official Samsung OEM parts and they all seem to have the same 5.0V 0.7A output spec. While the 1A output is above what the Samsung products deliver, it's pretty standard for aftermarket chargers. What the increased amperage will do is cause the battery to charge faster and as a result, get hotter. Heat can damage sensitive electronics, but I would be surprised if it was hot enough to damage the phone.
If you are that concerned, then it's probably best not to use it. You can charge it through a USB port connected to your PC. USB ports deliver 5V and .5A. It might take a little longer to charge, but you'll be well under the specified amperage.
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