Battery problem, getting less than half

ProwlingTiger

macrumors 65816
Original poster
Jan 15, 2008
1,331
218
So I've had the Retina Macbook since launch and continuously achieved near 10 hours on a full charge. Now I'm getting 3.5-4 hours. I've applied every update and I'm running the latest public build of El Capitan. I've attached screenshots from my activity monitor. The battery indicator blames Safari. I have one window open with 5 tabs and Safari isn't a problem according to Activity Monitor. I've had 5 windows with 40 tabs open before and still got great battery life.

What should I do?

Screenshot 2015-10-06 12.48.20.png
Screenshot 2015-10-06 12.47.46.png
Screenshot 2015-10-06 12.47.53.png
 
Last edited:

tbirdparis

macrumors 6502
May 30, 2015
266
144
Did you check your battery health stats using system report in about this mac? If your full charge capacity has taken a dive then maybe you've got a dodgy battery in which case, warranty repair time.
 

ProwlingTiger

macrumors 65816
Original poster
Jan 15, 2008
1,331
218
flash content?
I don't have flash installed.

Did you check your battery health stats using system report in about this mac? If your full charge capacity has taken a dive then maybe you've got a dodgy battery in which case, warranty repair time.
System report says everything is normal:

Battery Information:



Model Information:

Serial Number: D86506401LHFQM68L

Manufacturer: SMP

Device Name: bq20z451

Pack Lot Code: 0

PCB Lot Code: 0

Firmware Version: 702

Hardware Revision: 500

Cell Revision: 3202

Charge Information:

Charge Remaining (mAh): 4866

Fully Charged: Yes

Charging: No

Full Charge Capacity (mAh): 4866

Health Information:

Cycle Count: 79

Condition: Normal

Battery Installed: Yes

Amperage (mA): 0

Voltage (mV): 8664



System Power Settings:



AC Power:

System Sleep Timer (Minutes): 10

Disk Sleep Timer (Minutes): 10

Display Sleep Timer (Minutes): 10

Wake on AC Change: No

Wake on Clamshell Open: Yes

Wake on LAN: Yes

AutoPowerOff Delay: 14400

AutoPowerOff Enabled: 1

Current Power Source: Yes

DarkWakeBackgroundTasks: 1

Display Sleep Uses Dim: Yes

GPUSwitch: 2

Hibernate Mode: 3

PrioritizeNetworkReachabilityOverSleep: 0

Standby Delay: 10800

Standby Enabled: 1

Battery Power:

System Sleep Timer (Minutes): 5

Disk Sleep Timer (Minutes): 10

Display Sleep Timer (Minutes): 5

Wake on AC Change: No

Wake on Clamshell Open: Yes

AutoPowerOff Delay: 14400

AutoPowerOff Enabled: 1

DarkWakeBackgroundTasks: 0

Display Sleep Uses Dim: Yes

GPUSwitch: 2

Hibernate Mode: 3

Reduce Brightness: Yes

Standby Delay: 10800

Standby Enabled: 1



Hardware Configuration:



UPS Installed: No



AC Charger Information:



Connected: Yes

ID: 0x1653

Wattage (W): 29

Serial Number: C4H511703JAFPWWAN

Name: 29W USB-C Power Adapter

Manufacturer: Apple, Inc

Hardware Version: 1.0

Firmware Version: 3060002

Charging: No​
 

maxsix

Suspended
Jun 28, 2015
3,102
3,683
Western Hemisphere
I'd call Apple, of all the Apple laptops (MB, MBA, MBP) I've had, they have been very consistent in the way the battery performs. I think it's one area that Apple understands well and has properly engineered.
 

ProwlingTiger

macrumors 65816
Original poster
Jan 15, 2008
1,331
218
I'd call Apple, of all the Apple laptops (MB, MBA, MBP) I've had, they have been very consistent in the way the battery performs. I think it's one area that Apple understands well and has properly engineered.
Thanks, I'll call them. Just haven't had the bloody time recently.