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I just bought a Galaxy Note mobile but was wondering in using a generic charger when I am at the office.

In resume I want to use a charger with the same voltage (5V) and an output of .7 A. The original charger output is 5 V and 1 A will this affect the charger, the battery or the phone ?

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possible duplicate of Same voltage, different amperage for two power supplies – techie007 Jan 15 at 6:45
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closed as off topic by sblair, Mike Fitzpatrick, slhck, techie007, ChrisF Jan 15 at 23:14

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1 Answer

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The phone itself does not consume anywhere near 1A, or even 700mA, and so can be powered by the charger. The battery may not be able to charge though, but this is unlikely since USB provides 500mA maximum (per spec) and most phones can charge off that.

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The Galaxy Note can charge at up to 1,800mA (depending on what kernel and battery you have). But unless the charger gives it permission, it will not exceed 800mA and I think the factory kernel won't exceed 1A. I think you're underestimating both how much capacity modern batteries have and how fast they can charge. (Also, just because it looks like a USB port and works when connected to a USB host doesn't mean that's all it does.) – David Schwartz Jan 14 at 5:55
The phone still doesn't consume that much, even if the charging circuitry does. – Ignacio Vazquez-Abrams Jan 14 at 5:58
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Charging its battery is one of the ways the phone consumes power. – David Schwartz Jan 14 at 5:59
If you're unable to see the trees for the forest, sure. – Ignacio Vazquez-Abrams Jan 14 at 6:03
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If we're talking about the connection between the phone and the wall charger and the requirements on the charger, it doesn't matter what the phone does with the power. You can't understand a forest by understanding every tree. – David Schwartz Jan 14 at 6:04
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