nana_b

Q: Why does my battery keep running down after one hour?

After one hour, my battery moves from 100% to about 35%, and yet i just replaced it 3 days ago. These are the figures on my battery:

Battery Information:

 

  Model Information:

  Serial Number: D861015004NDGDL3T

  Manufacturer: SMP

  Device Name: bq20z451

  Pack Lot Code: 0

  PCB Lot Code: 0

  Firmware Version: 70

  Hardware Revision: 00aa

  Cell Revision: 2

  Charge Information:

  Charge Remaining (mAh): 3063

  Fully Charged: No

  Charging: No

  Full Charge Capacity (mAh): 5535

  Health Information:

  Cycle Count: 5

  Condition: Normal

  Battery Installed: Yes

  Amperage (mA): -2639

  Voltage (mV): 11185

 

Please help me know why my new battery runs down so quickly. Thanks

MacBook Pro, OSX Yosemite, 10.10.5

Posted on Sep 27, 2016 10:55 AM

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Q: Why does my battery keep running down after one hour?

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  • by braden85,

    braden85 braden85 Sep 28, 2016 3:14 PM in response to nana_b
    Community Specialists
    Sep 28, 2016 3:14 PM in response to nana_b
    Howdy nana_b,

    It sounds like your battery has a lower than expected run time even after you had it replaced. I would suggest the troubleshooting in the following article about that sort of issue:

    My battery runtime is low

    1. Learn how to minimize common causes of battery drain:

       
         
      • Optimize your battery life using the Optimizing Battery Life section earlier in this article.
      •  
      • Learn how apps can affect Mac battery performance. Check Activity Monitor for any malfunctioning software processes, especially after installing software updates or a new operating system. Installing updates is important to ensure optimal performance for all applications.
      •  
      • If you're still having battery runtime issues after optimizing your computer's performance and checking for malfunctioning software processes, test in Safe Mode. Safe Mode limits the active items on the system and allows testing in a more minimal environment. If the battery life is better in Safe Mode, you may need to do further software isolation for the items disabled by Safe Mode to determine what the power draw is while not operating in Safe Mode.
    From: About Mac notebook batteries​

     


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  • by Barry Hemphill,

    Barry Hemphill Barry Hemphill Sep 28, 2016 3:47 PM in response to nana_b
    Level 8 (38,062 points)
    Peripherals
    Sep 28, 2016 3:47 PM in response to nana_b

    You said "you replaced it." If that is accurate, I would take it in for testing (battery, computer). I have no clue whether or not the battery specs you listed are correct for your computer.

     

    Barry