Leaving charger plugged in

Discussion in 'MacBook Pro' started by Supercell, Jan 2, 2014.

  1. Supercell macrumors member

    Feb 19, 2011

    I just bought my first rMBP, and I'm wondering if it's okay to leave the charger plugged into the wall plug? Will it harm the charger? Cause fire, etc?
  2. maflynn Moderator


    Staff Member

    May 3, 2009
    No problem at all - I do that and have since the Powerbook days.
  3. yjchua95 macrumors 604

    Apr 23, 2011
    GVA, KUL, MEL (current), ZQN
    Once in a while, you have to drain the battery and charge it up.

    And every month, calibrate it.
  4. saturnotaku macrumors 68000

    Mar 4, 2013
  5. Stunned Monkey macrumors regular

    Sep 19, 2013
    According to this Apple support doc, newer macbook pro's with built in batteries do not require calibration:


    "Portables with built-in batteries
    Current Apple portable computer batteries are pre-calibrated and do not require the calibration procedure outlined in this article."

    I'm assuming if the OP recently purchased his it would fall under this.

    EDIT: Sorry saturnotaku...I was typing while you were posting!
  6. old-wiz macrumors G3

    Mar 26, 2008
    West Suburban Boston Ma
    I leave both iPad and MBP chargers plugged into surge protector at all times. I only connect to the iPad/MBP when the battery is low.
  7. snaky69 macrumors 603

    Mar 14, 2008
    The OP asked about leaving the charger plugged into a wall socket, not leaving it plugged into his/her computer.

    And calibration is no longer necessary.
  8. PicnicTutorials macrumors 6502a


    Dec 29, 2013
    Plugged in, once charged, the charging stops and the battery is left to drain. The charging doesn't kick back in untill the battery is drained a bit like 90 - 95% charged.
  9. mpantone macrumors 6502

    Mar 20, 2009
    Yup. I've been an Apple notebook owner for over ten years now myself.

    If there was any sort of fire risk, the chargers would have been pulled (like HP did a few months ago with their Chromebooks).

    Since they haven't, I assume these are safe. After all, Apple has been selling notebook computers for about two decades. They would know if they were a problem.

    I think the site operators here should really consider changing the name from MacRumors Forums to AppleOCD Forums. It would really be a more accurate description.


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