The March 2015 update of Apple's 13" MacBook Pro Retina Display, model A1502, features fifth-generation Intel Core i5 and i7 processors and introduces the Force Touch trackpad.

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MacBook can't function when the charger isn't plugged in

Since yesterday I have had problems regarding my MacBook. Yesterday it would turn off out of nowhere, even when my battery wasn't close to dying. After plugging the charger in and trying to restart it, everything worked fine for a bit but then the same thing happened again multiple times.

Now today the problem has worsened, meaning that I can only use my MacBook when the charger is plugged in. As soon as I remove the charger my MacBook instantly shuts down.

So I looked at some of the possible solutions, including identifying the battery status and this is what happened: my battery had the "Replace Now" status, so I did a SMC reset multiple times. After turning my MacBook back on (with the charger plugged in, since it won't function otherwise) my MacBook is now displaying a battery life of 0% including the status "battery won't be charged". The "Replace Now" status has also disappeared after the SMC reset.

Here is some information that hopefully helps in identifying the problem:

Charge Information:

  • Charge Remaining (mAh): 0
  • Fully Charged: no
  • Charging: no
  • Full Charge Capacity (mAh): 0

Health Information:

  • Cycle count: 896
  • Condition: normal
  • Battery installed: yes
  • Amperage (mA): 0
  • Voltage (mV): 11777

Any help would be greatly appreciated since I'm a student who uses his laptop daily and needs it to do school work.

  • Update: Literally as soon as I posted my question the battery status changed back to "Replace Now" but the battery life still shows 0%.
Answered! View the answer I have this problem too

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Well this tells us the battery is on the edge Cycle count: 896 I would replace it at this point.

What can happen as the battery ages, a cell can fail but as it's only one cell within the battery so appears to be OK, but it's not.

You may want to review how you use your system as in less than 3 years you've pushed the battery hard. You tend to allow your battery run all the way down then recharge. LiOn batteries are not designed to be be cycled this hard. If you have no choice then you'll need to consider replacing the battery more often. If you hit 400 cycles in year, then every year you need a new battery.

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Thank you very much for your answer. I indeed tend to run my battery all the way down, which seems to have caused this issue. Since I really need my MacBook I'll have no other choice then to get a new battery and use that one properly.

I have no clue whatsoever when it comes to computer parts, would you recommend me getting the battery replaced by Apple themselves or should I try to do it myself?


Here's the IFIXIT guide to replace your battery: MacBook Pro 13" Retina Display Early 2015 Battery Replacement and here's the battery: MacBook Pro 13" Retina (Early 2015) Battery. Take a read to see if your up to it, if not Apple is a good way to go it will be a bit more expensive, but, if you're not too skilled a safer way ;-}


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