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Old January 12th, 2013, 01:18 PM   #1 (permalink)
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Samsung N7000 Note.

The Samsung charger is spec'd at 5.0v, measures 4.92v.

Just checked my various other AC/USB adapters and 12v auto adapters and measured between 5.06v and 5.16v.

After reading this: http://www.apogeekits.com/power_adapter_selection.htm, I come away with the expectation that the voltages will fall once the chargers (unregulated, I assume) are actually charging a battery.... but I don't have a clue how much.

The Question:

Is it worth the expense of buying Samsung adapters to get something that's at or below 5.0v... or is the diff between that and, say, 5.2v not significant in terms of diminished battery life?

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Last edited by D-U-R-X; January 12th, 2013 at 03:05 PM. Reason: merged and trimmed duplicate posts
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Old January 12th, 2013, 02:03 PM   #2 (permalink)
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Default AW: Charging Voltage: How Critical?

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Originally Posted by PeteCress View Post
Samsung N7000 Note.

The Samsung charger is spec'd at 5.0v, measures 4.92v.

Just checked my various other-branded AC/USB adapters and 12v auto adapters and measured between 5.06v and 5.16v.

The Question:

Is it worth the expense of buying Samsung adapters to get something that's at or below 5.0v... or is the diff between that and, say, 5.2v not significant in terms of diminished battery life?
Did you measure while charging the phone?

Edit:
Just have seen your first post, answered my question, you didn't

To see the "true" voltage you have to stress the charger with some load, say charging the phone.

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Last edited by Harry2; January 12th, 2013 at 02:21 PM.
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Old January 12th, 2013, 03:06 PM   #3 (permalink)
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I would not waste your money buying a new charge. The same charger you have can fluctuate in voltage more than the difference in chargers being plugged into the same outlet. It all depends on when you took your measurements because your house voltage will vary voltage during different times of the day which effects the output of the AC/USB charger.
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