Battery problem, getting less than half

[ProwlingTiger]

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?

 

[maerz001]

flash content?

 

[tbirdparis]

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]

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]

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]

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.