Battery Time Not Lasting?

[PrinceNic]

Hi,
My refurbished 13 inch i7 2.8 GHz MBP came today, and I fully charged it from the 87 percent it had when I turned it on. As I started it back up, and checked the time though, it said it only had 3 hours left on it, yet it was fully charged.


Can someone explain what I should do next?

 

[simsaladimbamba]

The reported battery time is depending on your current CPU usage and your display brightness, and it also fluctuates.

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This should answer most, if not all, of your battery questions:
Apple Notebook Battery FAQ by GGJstudios
The F.A.Q. includes the following topics:

• BATTERY INFORMATION
• BATTERY LIFE FROM A CHARGE
• AC POWER
• CALIBRATION
• BATTERY LIFESPAN
• CHECKING STATUS AND HEALTH
• CHARGING
• WHAT IS A CYCLE?
• BATTERIES ARE NOT COVERED
• BULGING OR SWELLING BATTERY

______________________________________________________​

 

[PrinceNic]

Thank you! I had my display brightness all the way up,now that I toned it down, I'm getting a MUCH better time.

 

[PrinceNic]

Do I need to get a new battery?

Hi, I just got my refurbished 13 inch Macbook Pro, and something seems wrong, it goes down 7 percent in less than 10 minutes.

here are my coconut battery results:

current capacity: 5624

design capacity: 5770

 

[GGJstudios]

Hi, I just got my refurbished 13 inch Macbook Pro, and something seems wrong, it goes down 7 percent in less than 10 minutes.

here are my coconut battery results:

current capacity: 5624

design capacity: 5770

There is nothing wrong with your battery. There are many factors that impact your battery life. See the BATTERY LIFE FROM A CHARGE section of the following link for details, including tips on how to maximize your battery life.

It is also perfectly normal if your battery health (maximum capacity) is more or less than 100%, even when brand new, or if it fluctuates up or down over time. For further details, read the CHECKING STATUS AND HEALTH section of the following link.

This should answer most, if not all, of your battery questions:

Apple Notebook Battery FAQ​