Will my MacBook's battery be damaged if I do not use for next couple of months?

I bought a new Macbook Pro (March 2015) a month back. So far I have not started using it yet. It's charged and box packed as I do not currently have time to set it up for my development work.

Update: It's charged 90%+ but not being used.

  • Yes. Charge it now! – dan Nov 24 '15 at 10:06
  • It's charged 90%+ but not being used. – Volatil3 Nov 24 '15 at 10:09
  • Fine. Next check: May the 24th of 2016. – dan Nov 24 '15 at 11:55

These are what you need to keep in mind:

  • The battery works using chemical reactions, these reactions cannot be stopped but they can be slowed.
  • A laptop with the battery left in will continue using that battery very slowly.
  • A battery left completely dead inside a laptop that is still trying to draw power will kill the battery completely.

If you are storing the MacBook for a few months, take better care where you store it. Place it in a case, or completely dry bag to prevent dust buildup. Even if you keep it in the box it has come with, it would be fine.

Taking the above care, you don't have to worry about the battery.

Apple's Maximizing Battery Life and Lifespan page offers the following advice:

If you want to store your device long term, two key factors will affect the overall health of your battery: the environmental temperature and the percentage of charge on the battery when it’s powered down for storage. Therefore, we recommend the following:

  • Do not fully charge or fully discharge your device’s battery — charge it to around 50%. If you store a device when its battery is fully discharged, the battery could fall into a deep discharge state, which renders it incapable of holding a charge. Conversely, if you store it fully charged for an extended period of time, the battery may lose some capacity, leading to shorter battery life.
  • Power down the device to avoid additional battery use.
  • Place your device in a cool, moisture-free environment that’s less than 90° F (32° C).
  • If you plan to store your device for longer than six months, charge it to 50% every six months.

Depending on how long you store your device, it may be in a low-battery state when you remove it from long-term storage. After it’s removed from storage, it may require 20 minutes of charging with the original adapter before you can use it.

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  • @Sagar_D I think these precautions is applicable to all other laptop manufacturers also. – Aevi Nov 23 '15 at 10:00
  • @Aevi Yes, mostly to all devices that use a battery, and MacBook is one of them. – Sagar D Nov 23 '15 at 10:30
  • @SagarD It's in the box provided by Apple. What else do I need to know? What do you mean by Dry Bag? – Volatil3 Nov 24 '15 at 6:48
  • If you are keeping the box away from direct dust, there's no other care you need to take. Keeping it in the box will be sufficient. – Sagar D Nov 24 '15 at 7:00
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    @Sagar D: your explanation is better than the Apple one. Just add one key point about battery, which holds for any battery: when you don't use it for 6 months, charge it above 50 %. – dan Nov 24 '15 at 10:04

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