Macbook 12" really slow to charge?

Discussion in 'MacBook' started by Macs4u, Apr 22, 2017.

  1. Macs4u macrumors 6502

    Joined:
    Apr 19, 2008
    Location:
    Stoke on Trent
    #1
    Hi,

    I have just bought a used MacBook 12" 2015 base spec. Came boxed but the charger was missing as was told it had broken. Got it for a steal so happy with it. Went out and bought a new one today (29w genuine apple) and its taking absolutely ages to charge , was on 41% about an hour ago and just on 54% now. Thats a genuine apple charger but not a genuine apple cable and also its a usb-usb c cable so I had to plug a usb c to USB adapter into the power brick and then the non gen cable into the MacBook. Could this be the reason behind the slow charging?
     
  2. andy9l macrumors 68000

    Joined:
    Aug 31, 2009
    Location:
    England, UK
    #2
    You should be using a 60W charger, that's the main issue. Your frankenstein cable/adapter solution won't be helping things either.
     
  3. Macs4u thread starter macrumors 6502

    Joined:
    Apr 19, 2008
    Location:
    Stoke on Trent
    #3
    But it says the 29w is the right one?
     

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  4. andy9l macrumors 68000

    Joined:
    Aug 31, 2009
    Location:
    England, UK
    #4
    Well, I stand corrected. I always thought it was 60W - hence most USB-C monitors outputting 60W. Mine also says 29W. Must just be 13" MBPs that take 60W.

    Perhaps just try the Apple USB-C charging cable? It's £20 and I believe you can still return it up to 14 days after purchase.
     
  5. SkigolfMT macrumors newbie

    Joined:
    Apr 10, 2017
    #5
    I would guess the adapter might be at fault. That should fully charge in 1-2 hours....at least ours does with OEM power supply and OEM cable.
     
  6. Macs4u thread starter macrumors 6502

    Joined:
    Apr 19, 2008
    Location:
    Stoke on Trent
    #6
    Yeah I think I will try the original apple cable. Cant see how it can make a difference as surely the important factor is the 29w coming from the charger?

    Matt
    --- Post Merged, Apr 22, 2017 ---
    So you mean the adapter interfering with the charge?
     
  7. Brookzy macrumors 601

    Brookzy

    Joined:
    May 30, 2010
    Location:
    UK
    #7
    1. The correct power adapter for the 12" MacBook is the 29W Apple USB-C one, but using a the 61W or 87W Apple USB-C power adapter is also fine.
    2. Using a USB-C to USB-A adapter/cable will limit the charging speed to around 12W (as this is the limit for USB-A).
    3. When buying a USB-C to USB-C cable, get the Apple one. It is very reasonably priced at £19. Don't cheap out and get some rubbish on Amazon - most of them are dangerous, unreliable, too short, or all of the above.
     
  8. Macs4u thread starter macrumors 6502

    Joined:
    Apr 19, 2008
    Location:
    Stoke on Trent
    #8
    Ah right , thats it then. Just ordered an Apple cable. Thanks for the help/info for those who replied!
     

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