Low battery capacity nTB MBP

Discussion in 'MacBook Pro' started by SirGadden, Dec 16, 2016.

  1. SirGadden, Dec 16, 2016
    Last edited: Dec 16, 2016

    SirGadden macrumors newbie

    SirGadden

    Joined:
    Nov 29, 2016
    Location:
    Stockholm, Sweden
    #1
    My new nTB MBP shows max battery capacity as 4790 mAh (according to CoconutBattery), is it not supposed to have something like 5400mAh?
    Is this normal? I get that there will be sample variation but over 10% sounds alot.. :(

    Edit: Here's a screenshot for those who want to see [​IMG]
     
  2. Ma2k5 macrumors 6502a

    Ma2k5

    Joined:
    Dec 21, 2012
    #2
    That is strange, is it just an issue with the app I wonder?
     
  3. NoWayBehind macrumors 6502

    NoWayBehind

    Joined:
    Sep 9, 2014
    Location:
    Rheinland Pfalz Germany
    #3
    On my iPad Air 2 that I got on launch day at the end of 2014 I only had 93% of battery capacity, on my recent MacBook Pro 15 with Touch Bar I currently have between 103-105%. I've see people in this forum with only 99% on that model

    It really seems to depend on your luck, but you could try to contact Apple. Unfortunately this is normal and happens for every manufacturer. It also seems to vary by model.

    That being said, my max charge capacity of the iPad Air 2 only dropped 4% after 500 cycles to 89%, which I consider extremely good. Maybe its not as bad as it looks and its something technical. No idea to be honest.
     
  4. benobi macrumors newbie

    Joined:
    Dec 4, 2016
    #4
    Fwiw, my 13 nTB also reads 4790 in Battery Health 2. Not sure why this is?
     
  5. Typh macrumors newbie

    Joined:
    Dec 16, 2016
    #5
  6. SirGadden thread starter macrumors newbie

    SirGadden

    Joined:
    Nov 29, 2016
    Location:
    Stockholm, Sweden
    #6
    Thanks, I realise now that I confused mAh and Wh :)
    So I guess the formula would be:
    4790*X/1000 = 54,5(Wh)
    Where X would be the voltage (somewhere around 11,3V?)..

    In that case I guess 4790 mAh is perfectly fine :)
     

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