Charging Voltage: How Critical?


Last Updated:

  1. PeteCress

    PeteCress Well-Known Member This Topic's Starter

    Joined:
    Aug 12, 2010
    Messages:
    333
    Likes Received:
    21
    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?
     

    Advertisement
  2. Harry2

    Harry2 Well-Known Member

    Joined:
    Jun 3, 2010
    Messages:
    5,185
    Likes Received:
    1,345
    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.

    Harry
     
  3. OutOfPhase

    OutOfPhase Premium Member

    Joined:
    Dec 7, 2010
    Messages:
    4,023
    Likes Received:
    2,122
    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.
     

Share This Page

Loading...