Yosemite Battery Drain

wesfromOK, since this thread has degenerated into the predictable mess of conflicting and unhelpful replies, you would probably be better off mercy-killing it and starting another. Unfortunately, the deluge of "me too" replies means your question is likely to be ignored.

Post a new question and include an EtreCheck report of your system. The unhelpful answers posted thus far point to all the usual suspects that have resulted in poor battery life for every OS X update since Jaguar, at least.

Safe Mode eliminates the possibility of third party system modifications or software being the direct cause. If it still drains rapidly it is possible that a corrupted OS X installation is responsible, in which case you can reinstall Yosemite from the Recovery Partition or OS X Internet Recovery. Doing that does not erase any of your User account information or data, but a backup is recommended anyway, as a precaution against the unexpected. Also, should third party software be responsible, selectively restoring essential data from the recently created Time Machine backup – while omitting nonessential or potentially incompatible software – is an option.

It is also possible, though unlikely, that a hardware fault is the reason for rapid battery drain. Some hardware-related causes can be fixed easily with an SMC reset. Other hardware-related causes are possible. In any event observing the results of booting Safe Mode will advance troubleshooting.

Problem description:

Battery drain

EtreCheck version: 2.0.6 (91)

Report generated 22 ottobre 2014 09:55:21 CEST

Hardware Information: ℹ️

MacBook Pro (13-inch, Early 2011) (Verified)

MacBook Pro - model: MacBookPro8,1

1 2.3 GHz Intel Core i5 CPU: 2-core

8 GB RAM Upgradeable

BANK 0/DIMM0

4 GB DDR3 1333 MHz ok

BANK 1/DIMM0

4 GB DDR3 1333 MHz ok

Bluetooth: Old - Handoff/Airdrop2 not supported

Wireless: en1: 802.11 a/b/g/n

Video Information: ℹ️

Intel HD Graphics 3000 - VRAM: 512 MB

Color LCD 1280 x 800

System Software: ℹ️

OS X 10.10 (14A389) - Uptime: 0:41:34

Disk Information: ℹ️

ST9320325ASG disk0 : (320,07 GB)

S.M.A.R.T. Status: Verified

EFI (disk0s1) <not mounted> : 210 MB

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

Macintosh HD (disk1) / [Startup]: 318.84 GB (161.18 GB free)

Encrypted AES-XTS Unlocked

Core Storage: disk0s2 319.21 GB Online

MATSHITADVD-R UJ-8A8

USB Information: ℹ️

Apple Computer, Inc. IR Receiver

Apple Inc. FaceTime HD Camera (Built-in)

Apple Inc. Apple Internal Keyboard / Trackpad

Apple Inc. BRCM2070 Hub

Apple Inc. Bluetooth USB Host Controller

Thunderbolt Information: ℹ️

Apple Inc. thunderbolt_bus

Configuration files: ℹ️

/etc/sysctl.conf - Exists

/etc/hosts - Count: 30

Gatekeeper: ℹ️

Anywhere

Kernel Extensions: ℹ️

/Incompatible Software/Parallels Service.app

[not loaded] com.parallels.kext.prl_hid_hook (7.0 14920.689535) Support

[not loaded] com.parallels.kext.prl_hypervisor (7.0 14920.689535) Support

[not loaded] com.parallels.kext.prl_netbridge (7.0 14920.689535) Support

[not loaded] com.parallels.kext.prl_usb_connect (7.0 14920.689535) Support

[not loaded] com.parallels.kext.prl_vnic (7.0 14920.689535) Support

/Library/Application Support/VirtualBox

[loaded] org.virtualbox.kext.VBoxDrv (4.3.18) Support

[loaded] org.virtualbox.kext.VBoxNetAdp (4.3.18) Support

[loaded] org.virtualbox.kext.VBoxNetFlt (4.3.18) Support

[loaded] org.virtualbox.kext.VBoxUSB (4.3.18) Support

/System/Library/Extensions

[not loaded] com.devguru.driver.SamsungComposite (1.4.17 - SDK 10.6) Support

/System/Library/Extensions/ssuddrv.kext/Contents/PlugIns

[not loaded] com.devguru.driver.SamsungACMControl (1.4.17 - SDK 10.6) Support

[not loaded] com.devguru.driver.SamsungACMData (1.4.17 - SDK 10.6) Support

[not loaded] com.devguru.driver.SamsungMTP (1.4.17 - SDK 10.5) Support

[not loaded] com.devguru.driver.SamsungSerial (1.4.17 - SDK 10.6) Support

Startup Items: ℹ️

ChmodBPF: Path: /Library/StartupItems/ChmodBPF

HP IO: Path: /Library/StartupItems/HP IO

HP Trap Monitor: Path: /Library/StartupItems/HP Trap Monitor

Startup items are obsolete and will not work in future versions of OS X

Launch Agents: ℹ️

[not loaded] com.adobe.AAM.Updater-1.0.plist Support

[loaded] com.adobe.CS5ServiceManager.plist Support

[loaded] com.oracle.java.Java-Updater.plist Support

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[not loaded] com.teamviewer.teamviewer_desktop.plist Support

[loaded] org.macosforge.xquartz.startx.plist Support

Launch Daemons: ℹ️

[loaded] com.adobe.fpsaud.plist Support

[invalid?] com.adobe.SwitchBoard.plist Support

[running] com.cleverfiles.cfbackd.plist Support

[failed] com.edb.launchd.postgresql-9.1.plist Support

[loaded] com.microsoft.office.licensing.helper.plist Support

[loaded] com.oracle.java.Helper-Tool.plist Support

[loaded] com.oracle.java.JavaUpdateHelper.plist Support

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User Launch Agents: ℹ️

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[loaded] com.BlueStacks.AppPlayer.LogRotator.plist Support

[loaded] com.BlueStacks.AppPlayer.Service.plist Support

[loaded] com.BlueStacks.AppPlayer.UninstallAgent.plist Support

[loaded] com.BlueStacks.AppPlayer.UpdaterAgent.plist Support

[failed] com.facebook.videochat.[redacted].plist Support

[loaded] com.google.keystone.agent.plist Support

[running] com.spotify.webhelper.plist Support

[loaded] com.valvesoftware.steamclean.plist Support

[not loaded] org.virtualbox.vboxwebsrv.plist Support

User Login Items: ℹ️

Caffeine Applicazione (/Applications/Caffeine.app)

Dropbox Applicazione (/Applications/Dropbox.app)

Bowtie Applicazione (/Applications/Bowtie.app)

EpsonLowInkReminderAgent ApplicazioneHidden (/Applications/Epson Software/Epson Low Ink Reminder.app/Contents/EpsonLowInkReminderAgent.app)

EEventManager ApplicazioneHidden (/Applications/Epson Software/Event Manager.app/Contents/Resources/Assistants/Event Manager/EEventManager.app)

HP Scheduler ApplicazioneHidden (/Library/Application Support/Hewlett-Packard/Software Update/HP Scheduler.app)

Internet Plug-ins: ℹ️

FlashPlayer-10.6: Version: 15.0.0.189 - SDK 10.6 Support

QuickTime Plugin: Version: 7.7.3

AdobePDFViewerNPAPI: Version: 10.1.12 Support

AdobePDFViewer: Version: 10.1.12 Support

Flash Player: Version: 15.0.0.189 - SDK 10.6 Support

Default Browser: Version: 600 - SDK 10.10

SharePointBrowserPlugin: Version: 14.1.0 Support

Silverlight: Version: 5.1.30514.0 - SDK 10.6 Support

JavaAppletPlugin: Version: Java 7 Update 71 Check version

User Internet Plug-ins: ℹ️

BlueStacks Install Detector: Version: 0.3.6 - SDK 10.7 Support

Picasa: Version: 1.0 Support

Safari Extensions: ℹ️

AdBlock

Firebug Lite for Safari

Wolfram MiniToolbar (Disabled)

3rd Party Preference Panes: ℹ️

Flash Player Support

Growl Support

Java Support

MacFUSE Support

Time Machine: ℹ️

Time Machine not configured!

Top Processes by CPU: ℹ️

12% (uHD-LogRotator)

10% WindowServer

9% Folder Actions Dispatcher

3% SubmitDiagInfo

3% launchd

Top Processes by Memory: ℹ️

1.67 GB Folder Actions Dispatcher

232 MB Safari

180 MB mds_stores

146 MB com.apple.WebKit.WebContent

137 MB launchd

Virtual Memory Information: ℹ️

231 MB Free RAM

3.56 GB Active RAM

3.31 GB Inactive RAM

1.49 GB Wired RAM

2.54 GB Page-ins

2 MB Page-outs

I have the same problem too with my macbook pro retina 2012. I only can get 5 hours max from full charge battery usage after upgrade to Yosemite. Im using Mountain Lion previously and i can get 9-10 hours battery usage from full charge battery. Is this normal or maybe the battery need to calibrate when installing new OS? I should just stayed on Mountain Lion instead of upgrade to Yosemite. Anybody got any ideas?

Hey guys! I am having a battery issue after upgrading to Yosemite as well :S The Battery drains a lot faster and what's worse the battery health went down from 96% to 94% in an hour!

Here is EtreCheck report:

Problem description:

Battery drains faster under Yosemite, and battery health dropped 3% in an hour!

EtreCheck version: 2.0.6 (91)

Report generated 2014. október 22. 13:25:16 CEST

Hardware Information: ℹ️

MacBook Air (Verified)

MacBook Air - model: MacBookAir6,2

1 1.3 GHz Intel Core i5 CPU: 2-core

8 GB RAM Not upgradeable

BANK 0/DIMM0

4 GB DDR3 1600 MHz ok

BANK 1/DIMM0

4 GB DDR3 1600 MHz ok

Bluetooth: Good - Handoff/Airdrop2 supported

Wireless: en0: 802.11 a/b/g/n/ac

Video Information: ℹ️

Intel HD Graphics 5000 -

Color LCD 1440 x 900

System Software: ℹ️

OS X 10.10 (14A389) - Uptime: 0:29:55

Disk Information: ℹ️

APPLE SSD SD0128F disk0 : (121,33 GB)

S.M.A.R.T. Status: Verified

EFI (disk0s1) <not mounted> : 210 MB

Macintosh HD (disk0s2) / [Startup]: 120.47 GB (58.47 GB free)

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

USB Information: ℹ️

Apple Internal Memory Card Reader

Apple Inc. BRCM20702 Hub

Apple Inc. Bluetooth USB Host Controller

Thunderbolt Information: ℹ️

Apple Inc. thunderbolt_bus

Configuration files: ℹ️

/etc/sysctl.conf - Exists

Gatekeeper: ℹ️

Mac App Store and identified developers

Kernel Extensions: ℹ️

/Applications/ESET Cyber Security Pro.app

[loaded] com.eset.kext.esets_kac (600.01.30f01 - SDK 10.6) Support

[loaded] com.eset.kext.esets_pfw (600.01.30f01 - SDK 10.6) Support

/Applications/Parallels Desktop.app

[not loaded] com.parallels.kext.hidhook (9.0 24172.951362) Support

[not loaded] com.parallels.kext.hypervisor (9.0 24172.951362) Support

[not loaded] com.parallels.kext.netbridge (9.0 24172.951362) Support

[not loaded] com.parallels.kext.usbconnect (9.0 24172.951362) Support

[not loaded] com.parallels.kext.vnic (9.0 24172.951362) Support

/Applications/VMware Fusion.app

[not loaded] com.vmware.kext.vmci (90.6.3) Support

[not loaded] com.vmware.kext.vmioplug.14.1.3 (14.1.3) Support

[not loaded] com.vmware.kext.vmnet (0210.30.67) Support

[not loaded] com.vmware.kext.vmx86 (0210.30.67) Support

[not loaded] com.vmware.kext.vsockets (90.6.0) Support

/Library/Extensions

[loaded] com.cyberic.SmoothMouse (9 - SDK 10.8) Support

[loaded] com.driver.LogJoystick (2.0 - SDK 10.8) Support

[not loaded] com.logitech.driver.LogiGamingMouseFilter (1 - SDK 10.8) Support

/System/Library/Extensions

[not loaded] com.ZTE.driver.ZTEUSBCDCACMData (1.3.6) Support

[not loaded] com.ZTE.driver.ZTEUSBMassStorageFilter (1.3.6) Support

Startup Items: ℹ️

HWNetMgr: Path: /Library/StartupItems/HWNetMgr

HWPortDetect: Path: /Library/StartupItems/HWPortDetect

StartOuc: Path: /Library/StartupItems/StartOuc

Startup items are obsolete and will not work in future versions of OS X

Launch Agents: ℹ️

[running] cn.com.zte.usbswapper.plist Support

[running] com.bjango.istatmenusagent.plist Support

[running] com.bjango.istatmenusnotifications.plist Support

[loaded] com.oracle.java.Java-Updater.plist Support

[not loaded] com.teamviewer.teamviewer.plist Support

[not loaded] com.teamviewer.teamviewer_desktop.plist Support

[loaded] org.macosforge.xquartz.startx.plist Support

Launch Daemons: ℹ️

[running] cn.com.zte.MessageCenter.plist Support

[running] cn.com.zte.PPPMonitor.plist Support

[loaded] com.adobe.fpsaud.plist Support

[running] com.bjango.istatmenusdaemon.plist Support

[running] com.eset.esets_daemon.plist Support

[running] com.iobit.AMCDaemon.plist Support

[loaded] com.macromates.auth_server.plist Support

[loaded] com.oracle.java.Helper-Tool.plist Support

[loaded] com.oracle.java.JavaUpdateHelper.plist Support

[loaded] com.teamviewer.Helper.plist Support

[not loaded] com.teamviewer.teamviewer_service.plist Support

[loaded] org.macosforge.xquartz.privileged_startx.plist Support

User Launch Agents: ℹ️

[loaded] com.adobe.ARM.[...].plist Support

[running] com.cyberic.smoothmouse.plist Support

[loaded] com.cyberic.smoothmouseupdater.plist Support

[loaded] com.google.keystone.agent.plist Support

User Login Items: ℹ️

iTunesHelper Alkalmazás (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

Dropbox Alkalmazás (/Applications/Dropbox.app)

Google Drive UNKNOWN (missing value)

Google Chrome AlkalmazásHidden (/Applications/Google Chrome.app)

Android File Transfer Agent Alkalmazás (/Users/[redacted]/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)

VMware Fusion Start Menu Alkalmazás (/Applications/VMware Fusion.app/Contents/Library/VMware Fusion Start Menu.app)

ESET Cyber Security Pro Alkalmazás (/Applications/ESET Cyber Security Pro.app)

Internet Plug-ins: ℹ️

FlashPlayer-10.6: Version: 15.0.0.152 - SDK 10.6 Support

Default Browser: Version: 600 - SDK 10.10

AdobePDFViewerNPAPI: Version: 11.0.09 - SDK 10.6 Support

AdobePDFViewer: Version: 11.0.09 - SDK 10.6 Support

Flash Player: Version: 15.0.0.152 - SDK 10.6 Mismatch! Adobe recommends 15.0.0.189

QuickTime Plugin: Version: 7.7.3

SharePointBrowserPlugin: Version: 14.3.9 - SDK 10.6 Support

Silverlight: Version: 4.1.10329.0 Support

DirectorShockwave: Version: 12.1.2r152 - SDK 10.6 Support

JavaAppletPlugin: Version: Java 8 Update 20 Check version

Safari Extensions: ℹ️

AdBlock

LastPass

OpenIE (Disabled)

3rd Party Preference Panes: ℹ️

Flash Player Support

Java Support

SmoothMouse Support

Time Machine: ℹ️

Skip System Files: NO

Mobile backups: OFF

Auto backup: YES

Destinations:

Rostas TM [Local]

Total size: 399.76 GB

Total number of backups: 17

Oldest backup: 2013-12-31 16:59:31 +0000

Last backup: 2014-08-25 11:49:19 +0000

Size of backup disk: Excellent

Backup size 399.76 GB > (Disk size 0 B X 3)

Top Processes by CPU: ℹ️

5% WindowServer

1% sysmond

0% fontd

0% SystemUIServer

0% OneDrive

Top Processes by Memory: ℹ️

318 MB com.apple.WebKit.WebContent

232 MB Safari

206 MB mds_stores

137 MB softwareupdated

129 MB Finder

Virtual Memory Information: ℹ️

3.33 GB Free RAM

3.94 GB Active RAM

397 MB Inactive RAM

918 MB Wired RAM

1.28 GB Page-ins

0 B Page-outs

MrBlaise wrote:

Hey guys! I am having a battery issue after upgrading to Yosemite as well :S The Battery drains a lot faster and what's worse the battery health went down from 96% to 94% in an hour!

That's very good, why are you complaining about a 2% per hour loss. That = 50 hours of use!

Hello,

after install Yosemite i have one problem with the icon battery.. I disabled the battery icon in (shows battery status in the menu bar). When I reactivated the battery icon, not show when it is charging and viceversa. Also, now the battery icon is shown before the wifi icon and no after the wifi icon..

I have the MacBook Pro 13" retina display

Any idea for this problem?

Regards,

Andrea

I am having the same issue. As of now the battery is at 100% and says time remaining 1:54. Here is my EtreCheck results.

Problem description:

Decreased battery life

EtreCheck version: 2.0.6 (91)

Report generated October 22, 2014 at 5:29:45 PM HST

Hardware Information:ℹ️

MacBook Pro (15-inch, Early 2011) (Verified)

MacBook Pro - model: MacBookPro8,2

1 2.3 GHz Intel Core i7 CPU: 4-core

4 GB RAM Upgradeable

BANK 0/DIMM0

2 GB DDR3 1333 MHz ok

BANK 1/DIMM0

2 GB DDR3 1333 MHz ok

Bluetooth: Old - Handoff/Airdrop2 not supported

Wireless: en1: 802.11 a/b/g/n

Video Information:ℹ️

Intel HD Graphics 3000 - VRAM: 384 MB

Color LCD 1680 x 1050

AMD Radeon HD 6750M - VRAM: 1024 MB

System Software:ℹ️

OS X 10.10 (14A389) - Uptime: 0:4:59

Disk Information:ℹ️

TOSHIBA MK7559GSXF disk0 : (750.16 GB)

S.M.A.R.T. Status: Verified

EFI (disk0s1) /Volumes/firmwaresyncd.nrPcIk : 210 MB (196 MB free)

Macintosh HD (disk0s2) / [Startup]: 679.00 GB (397.55 GB free)

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

BOOTCAMP (disk0s4) /Volumes/BOOTCAMP : 70.30 GB (31.84 GB free)

MATSHITADVD-R UJ-8A8

USB Information:ℹ️

Apple Inc. FaceTime HD Camera (Built-in)

Apple Inc. Apple Internal Keyboard / Trackpad

Apple Inc. BRCM2070 Hub

Apple Inc. Bluetooth USB Host Controller

Apple Computer, Inc. IR Receiver

Thunderbolt Information:ℹ️

Apple Inc. thunderbolt_bus

Gatekeeper:ℹ️

Mac App Store and identified developers

Kernel Extensions:ℹ️

/System/Library/Extensions

[not loaded] com.Belcarra.iokit.USBLAN_netpart (2.0.2) Support

[not loaded] com.Belcarra.iokit.USBLAN_usbpart (2.0.2) Support

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/System/Library/Extensions/Belcarra.USBLAN_netpart.kext/Contents/PlugIns

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Launch Agents:ℹ️

[loaded] org.macosforge.xquartz.startx.plist Support

Launch Daemons:ℹ️

[loaded] com.adobe.fpsaud.plist Support

[invalid?] com.cardosystems.cardo-updater.plist Support

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User Launch Agents:ℹ️

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[loaded] com.google.keystone.agent.plist Support

[not loaded] com.mactuneup.schedule.plist Support

User Login Items:ℹ️

AdobeResourceSynchronizer ApplicationHidden (/Applications/Adobe Reader.app/Contents/Support/AdobeResourceSynchronizer.app)

Internet Plug-ins:ℹ️

JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version

FlashPlayer-10.6: Version: 15.0.0.189 - SDK 10.6 Support

Default Browser: Version: 600 - SDK 10.10

AdobePDFViewerNPAPI: Version: 11.0.09 - SDK 10.6 Support

AdobePDFViewer: Version: 11.0.09 - SDK 10.6 Support

Flash Player: Version: 15.0.0.189 - SDK 10.6 Support

QuickTime Plugin: Version: 7.7.3

OfficeLiveBrowserPlugin: Version: 12.3.6 Support

Silverlight: Version: 5.1.30514.0 - SDK 10.6 Support

iPhotoPhotocast: Version: 7.0 - SDK 10.8

User Internet Plug-ins:ℹ️

Google Earth Web Plug-in: Version: 7.1 Support

Safari Extensions:ℹ️

Ghostery

3rd Party Preference Panes:ℹ️

Flash Player Support

GoPro Support

MacFUSE Support

Time Machine:ℹ️

Skip System Files: NO

Mobile backups: ON

Auto backup: YES

Destinations:

Data [Network]

Total size: 2 TB

Total number of backups: 55

Oldest backup: 2014-07-16 04:42:47 +0000

Last backup: 2014-10-23 02:17:43 +0000

Size of backup disk: Excellent

Backup size 2 TB > (Disk size 0 B X 3)

Top Processes by CPU:ℹ️

6% WindowServer

4% backupd

1% diskimages-helper

1% cardo-updater

0% fontd

Top Processes by Memory:ℹ️

94 MB Finder

90 MB Safari

86 MB mds_stores

73 MB loginwindow

69 MB Spotlight

Virtual Memory Information:ℹ️

972 MB Free RAM

1.77 GB Active RAM

447 MB Inactive RAM

1.09 GB Wired RAM

932 MB Page-ins

0 B Page-outs

I just "upgraded" to Yosemite on my MBA (early 2014) last night after I upgraded my iMac (late 2013) the day before. Loved the interface and fresh new function on the iMac and didn't notice any issues so I went ahead and updated the MBA. To my horror - my battery drains in 3 hours flat. I simply couldn't believe my eye as I have been enjoying the pre-yosemite battery life on Maverick of 12 hours. What should I do?? I have no 3rd party software running as I know. The MBA is my work laptop and therefore only licensed software. Can someone help with suggestions on what I can do to claim back my battery life? My MBA is also considerably hotter then before.

Many thanks all!

Hi I checked what you suggested - battery status is Normal

Checked activity monitor on CPU and found cloudd running at 60+% and bird at35+%?! what are these???

I am using

MacBook Air (13-inch, Early 2014)

1.7 GHz Intel Core i7

8 GB 1600 MHz DDR3

Intel HD Graphics 5000 1536 MB

Please help. MBA is hot and battery drains in 2-3 hours!!!

Same thing for me, I performed a rollback on Yosemite in order to recover a correct battery autonomy.

I don't know how if it has been tested internally, but it seems that the battery autonomy was certainly not the priority to deliver Yosemite ...

I am definitely upset to buy a product at 2 times cost of a PC and see that a such important point was left out, getting a lot of users loosing their time in upgrading to Yosemite and then downgrading to Mavericks.

If the OS is not ready, just keep it as a beta not as an official release !

wesfromOK, as I feared would be the case I'll have to unsubscribe from this thread. The signal to noise ratio in this thread has made it impracticable for me to give your question the attention it deserves.

I encourage you mark this question closed, and post a new question. I will make it a point to look for it.

As I wrote, this unfortunate situation is an inherent limitation of this support resource, and is not your fault.

Same issue. I have a mid-2012 first gen MBP with Retina Display. Until upgrading to OS X Yosemite, I had zero issues and only in firmware updates have my fans actually switched on. Now, the fans activate like clockwork, my Mac heats up very quickly, and as I am typing this, I have lost 4% of battery life. I shut down the Mac last night while plugged into Magsafe 2 at 100%. In thirty minutes, my Mac has lost 27% charge. My total battery life has been estimated at 2hrs 14min from a 100% charge…at minimum display brightness.

As beautiful as Yosemite is, this is ridiculous. And yes, before anyone asks, all apps are up to date and third-party applications do not actively run regularly, if at all. Safari is shown as the largest user of power.

Please help, Apple!

Apple OS department is worse and worse..... I've experienced the same too after upgrading to Yosemite my 2014 macbook from 9-10 hours now only last 3 hours ... I turn on my macbook with screen off, I lost 20-30% in 40 minutes .... worse battery ever....

Not only on OSX it also happened to my iPhone 6 plus .... with the upgrade 8.1 now the battery only last 6 hours (from about 10 hours) .... my iPhone 4 is better with iOS 7.04 it can last 8 hours.... my friend's Samsung S5 only lost 20% battery in 4 hours ....

Why the upgrading made every battery in Apple products worse and worse .....