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Charger

207 Views 2 Replies Latest reply: Oct 31, 2013 12:02 PM by SergZak RSS
L. Friedman Level 1 Level 1 (15 points)
Currently Being Moderated
Oct 31, 2013 11:53 AM

When the charger is plugged into the ipad and the ipad is fully charged, is the ipad still pulling electricity from the wall. Same question for a 2006 lap top, and Iphone 4s.

  • Johnathan Burger Level 6 Level 6 (14,440 points)
    Currently Being Moderated
    Oct 31, 2013 11:56 AM (in response to L. Friedman)

    Yes.

    The battery will run down a small amount, recharge to full, run down a small amount, etc.

  • SergZak Level 4 Level 4 (3,285 points)
    Currently Being Moderated
    Oct 31, 2013 12:02 PM (in response to L. Friedman)

    After the device is fully charged, it enters a maintenance charging state (or trickle charge) which uses very little power. So yes, the device is still drawing power but I don't think one should be very concerned about it. If you are, unplug the device or put it on a switchable power strip if you don't feel like pulling the charger out of the AC socket every time.

     

    From wikipedia:

    "Trickle charging means charging  a fully charged battery under no-load at a rate equal to its self-discharge rate, thus enabling the battery to remain at its fully charged level."

     

    http://en.wikipedia.org/wiki/Trickle_charging

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