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The S3 or any other Smartphone is never tied to any electrical outlet. There are many different ways to charge any Smartphone without an electrical outlet.
Sorry, there was a problem. Please try again later.My two-year-old Galaxy S3 battery used to last approximately 6 hours before needing a charge. My new Galaxy S6 battery lasts all day. After a full day (12 hours) of use it still has 50 to 60% battery life remaining. I pop it on the wireless charger overnight and I'm all set for the next day. I do turn the phone off at night while charging.
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