Full Charge Capacity of mid 2014 Macbook Pro

So I have recently purchased a macbook pro - very happy.


However, I have been keeping a close eye on the battery details. I have noticed that the full charge capacity of my macbook started at OVER 9000 mAh (I think it was 9200 mAh). In a few weeks / month and 14 charge cycles later, the full charge capacity has dropped now to 8542 mAh. I am concerned that the full charge capacity is dropping much too quickly.


I contacted Apple Support through Apple care and that experience was surprisingly frustrating. They couldn't answer my question at all! They just kept saying that if the cycle count is under 1000 and the battery condition says "Normal" we are good. But that didn't answer my question. Should the full charge capacity be dropping like this (at it's current speed)? I asked multiple times and they just kept telling me about charge cycles and battery condition status. As this is my first mac, I was expecting much better support from Apple. I was disappointed to say the least.

MacBook Pro (Retina, 15-inch, Mid 2014), iOS 8.3

Posted on Apr 25, 2015 6:14 AM

Reply
6 replies

Apr 25, 2015 7:17 AM in response to OGELTHORPE

Hi - thanks for the reply. First, only once have I let the macbook go deep into the battery life before charging. Typically I will charge it between 30 - 50 % battery life remaining. I also do not typically leave it plugged in. Further, I have checked my settings on my macbook to max battery life as well. Still, I am wondering if I should see a drop in full charge capacity this early in the life of a new battery.

Apr 25, 2015 7:10 AM in response to Freen78

The health and life of your battery will to a large degree be how you use it. Deep discharges will shorten the life of the battery as well as having it connected to AC 100% of the time. Since I have no idea how you use yours I cannot give you any meaningful reply.


However here are Apple support articles that you may find informative:


https://www.apple.com/support/macbookpro/batteries_power/


Ciao.

Apr 25, 2015 7:49 AM in response to Freen78

Around 400 mAh deduction is not so much considerable, given that you have already 14 cycles registered and it may have also happened depending on the way of use.


The 2 most fiercest enemies of macbook battery are Deep Discharges and Heat.


Never ever in your life let your macbook drain down to a level of around 2% - 3% or wait for your battery to completely drain up. Remember that laptop batteries are not designed in the way mobile and tablet batteries are designed. The mobile batteries won’t be affected very severely like the laptop batteries if they go in deep discharge state.


Always, try your best to run your macbook as cool as possible and avoid the heat. Continuos excessive heat can also severely affect the macbook battery. Avoid playing games or graphic intensive apps to run continuously for a long considerable time period. Always use your macbook on a hard surface and never on any bed or couch. Use a hard board or a cooling pad if you intend to use it on your lap.


You should only keep it connected to the AC power when in use. Always disconnect it when putting in sleep or during shutdown. Make it a habit to drain the battery to the level of around 50 - 60% of the full charge once or twice a month.


I think so, you should use it for couple of days and see how the battery behaves. If the battery capacity declines drastically, then you should make an Apple genius bar appointment.


Hope this helps.......


- Granel.

Jul 25, 2015 12:42 PM in response to Freen78

You are not alone with battery concern. I got my 15 inch retina macbook pro brand-new less than a month ago, this last June. It is mid-2014 top-of-the-line model, A1398. Its full charge capacity started out as 89.3 Wh. Now after 5 load cycles, it takes about 86 Wh which is significantly below the proposed capacity of 95 Wh for 2014 models and 99.5 Wh for 2015 models. It could run as short as 4 hours without charge and normally about 6 hours according to the battery health app. I didn't do any gaming or other power-hungry operations by far. I wonder whether my battery would be seen by any chance as defective thus covered by 1 year warranty for a replacement, or is it necessary?

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Full Charge Capacity of mid 2014 Macbook Pro

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