[runamuck83]

So, I've owned my Surface since launch day. I love it, and have no regrets.

I just recently started having an issue where the battery seems to be draining quite quickly under basic web surfing, etc.

I just lost about 10% in about 10 minutes of surfing. 1% a minute? Before, I'd maybe lose about 1% in 10 minutes.


How can I find out what is running that is draining the battery? I have installed an SDCard recently....could that be it? I've also been installing a lot of different apps too.

Thanks for the help!

[Jazmac]

Can't quite call it. Background apps that run all the time might be the first place to look.

[johninsj]

reboot it.

[Dewg]

Charm bar, search, task manager. Run that and look at detailed view. See what is taking high CPU.

[dark.davy]

If thats doesnt shed light on the App, you can try this:
Guided Help: Get a detailed Power Efficiency Diagnostics Report for your computer in Windows 7

It works on the Surface. Likely you will see a warning about an App or piece of hardware malfunctioning

[narv]

what johninsj said, did you try rebooting the tablet? this will kill any open apps that are bugged and killing the battery.. if after the reboot it's fine, then you can track down the issue.

my surface has AMAZING battery life.. i can get 2 days of minimal use before needing to charge. Last night my surface was at 30% battery and i pulled it out and used it for 3ish hours with xbox music and another open app for a game i was playing with my friends. the screen wasn't turned off at all either for those 3 hours. battery was at 4% when we were done. That is some pretty heavy use i'd say.

[runamuck83]

Tried these suggestions and still no go. I just used the surface to surf the web for about and hour and battery went from 72% to 51%. WTF?

[dark.davy]

Can you post the Energy-Report?

[rebornempowered]

Tried these suggestions and still no go. I just used the surface to surf the web for about and hour and battery went from 72% to 51%. WTF?

I was having similar problems and my battery died a few days ago. Sent it in for the warranty. Not saying your battery is bad but that could be the problem.

[runamuck83]

Energy report:

Power Efficiency Diagnostics Report

Computer Name	JOES-SURFACE
Scan Time	2013-01-08T03:10:11Z
Scan Duration	60 seconds
System Manufacturer	Microsoft
System Product Name	Surface with Windows RT
BIOS Date	09/10/2012
BIOS Version	v3.5.500
OS Build	9200
Platform Role	PlatformRoleSlate
Plugged In	false
Process Count	50
Thread Count	1008
Report GUID	{7a601435-0dd3-4f53-9650-f6d9609d1d75}

Analysis Results

Errors

System Availability Requests:System Required Request
The device or driver has made a request to prevent the system from automatically entering sleep.

Requesting Driver Instance	ACPI\NVDA0107\2&daba3ff&3
Requesting Driver Device	NVIDIA Tegra Wave Device

CPU Utilization:Processor utilization is high
The average processor utilization during the trace was high. The system will consume less power when the average processor utilization is very low. Review processor utilization for individual processes to determine which applications and services contribute the most to total processor utilization.

Average Utilization (%)

66.67

Warnings

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	iexplore.exe
PID	5360
Average Utilization (%)	12.96
Module	Average Module Utilization (%)
\Device\HarddiskVolume4\Windows\System32\mshtml.dll	2.91
\Device\HarddiskVolume4\Windows\System32\jscript9.dll	2.86
\SystemRoot\system32\ntoskrnl.exe	2.02

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	explorer.exe
PID	3200
Average Utilization (%)	10.16
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	2.68
\SystemRoot\System32\win32k.sys	1.95
\Device\HarddiskVolume4\Windows\System32\nvd3dum.dll	0.94

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	dwm.exe
PID	928
Average Utilization (%)	6.72
Module	Average Module Utilization (%)
\Device\HarddiskVolume4\Windows\System32\dwmcore.dll	1.79
\SystemRoot\system32\ntoskrnl.exe	1.45
\Device\HarddiskVolume4\Windows\System32\nvd3dum.dll	0.92

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	System
PID	4
Average Utilization (%)	6.51
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	3.22
\SystemRoot\system32\DRIVERS\nvlddmkm.sys	0.54
\SystemRoot\System32\drivers\nvse.sys	0.49

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	WerFault.exe
PID	2480
Average Utilization (%)	5.19
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	3.32
\SystemRoot\System32\ntdll.dll	0.95
\Windows\System32\KernelBase.dll	0.32

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	iexplore.exe
PID	6444
Average Utilization (%)	4.62
Module	Average Module Utilization (%)
\Device\HarddiskVolume4\Windows\System32\mshtml.dll	0.88
\SystemRoot\system32\ntoskrnl.exe	0.81
\Device\HarddiskVolume4\Windows\System32\jscript9.dll	0.78

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	WWAHost.exe
PID	4432
Average Utilization (%)	2.03
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	0.58
\Device\HarddiskVolume4\Windows\System32\jscript9.dll	0.30
\Device\HarddiskVolume4\Windows\System32\combase.dll	0.22

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	RuntimeBroker.exe
PID	4024
Average Utilization (%)	1.86
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	0.54
\Device\HarddiskVolume4\Windows\System32\combase.dll	0.36
\Device\HarddiskVolume4\Windows\System32\ntdll.dll	0.29

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	WWAHost.exe
PID	6808
Average Utilization (%)	1.38
Module	Average Module Utilization (%)
\Device\HarddiskVolume4\Windows\System32\mshtml.dll	0.62
\Device\HarddiskVolume4\Windows\System32\jscript9.dll	0.22
\SystemRoot\system32\ntoskrnl.exe	0.19

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	LiveComm.exe
PID	272
Average Utilization (%)	1.26
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	0.35
\Device\HarddiskVolume4\Windows\System32\ntdll.dll	0.18
\Device\HarddiskVolume4\Windows\System32\rpcrt4.dll	0.14

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	LyncMX.exe
PID	1576
Average Utilization (%)	1.22
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	0.55
\SystemRoot\System32\ntdll.dll	0.17
\Windows\System32\combase.dll	0.04

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	MsMpEng.exe
PID	1788
Average Utilization (%)	1.17
Module	Average Module Utilization (%)
\Device\HarddiskVolume4\ProgramData\Microsoft\Windows Defender\Definition Updates\{EFAE2E1E-A7DC-4226-A7C9-B07333B1B8B5}\mpengine.dll	0.70
\SystemRoot\system32\ntoskrnl.exe	0.14
\Device\HarddiskVolume4\Windows\System32\ntdll.dll	0.14

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	onenoteim.exe
PID	1992
Average Utilization (%)	0.90
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	0.59
\Device\HarddiskVolume4\Windows\System32\ntdll.dll	0.04
\Device\HarddiskVolume4\Windows\System32\nvd3dum.dll	0.03

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	svchost.exe
PID	816
Average Utilization (%)	0.86
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	0.27
\Device\HarddiskVolume4\Windows\System32\rpcrt4.dll	0.21
\Device\HarddiskVolume4\Windows\System32\ntdll.dll	0.17

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	taskhostex.exe
PID	3616
Average Utilization (%)	0.79
Module	Average Module Utilization (%)
\Device\HarddiskVolume4\Windows\System32\esent.dll	0.26
\SystemRoot\system32\ntoskrnl.exe	0.17
\Device\HarddiskVolume4\Windows\System32\ntdll.dll	0.12

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	iexplore.exe
PID	5844
Average Utilization (%)	0.78
Module	Average Module Utilization (%)
\SystemRoot\System32\win32k.sys	0.23
\SystemRoot\system32\ntoskrnl.exe	0.21
\Device\HarddiskVolume4\Windows\System32\ntdll.dll	0.04

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	svchost.exe
PID	900
Average Utilization (%)	0.74
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	0.29
\Device\HarddiskVolume4\Windows\System32\ntdll.dll	0.09
\Device\HarddiskVolume4\Windows\System32\rpcrt4.dll	0.04

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	SettingSyncHost.exe
PID	748
Average Utilization (%)	0.69
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	0.30
\SystemRoot\System32\ntdll.dll	0.10
\Windows\System32\esent.dll	0.06

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	lsass.exe
PID	652
Average Utilization (%)	0.59
Module	Average Module Utilization (%)
\Device\HarddiskVolume4\Windows\System32\bcryptprimitives.dll	0.22
\SystemRoot\system32\ntoskrnl.exe	0.15
\Device\HarddiskVolume4\Windows\System32\ntdll.dll	0.06

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	csrss.exe
PID	556
Average Utilization (%)	0.42
Module	Average Module Utilization (%)
\SystemRoot\System32\win32k.sys	0.20
\SystemRoot\system32\ntoskrnl.exe	0.15
\SystemRoot\system32\hal.dll	0.03

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	svchost.exe
PID	976
Average Utilization (%)	0.40
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	0.16
\Device\HarddiskVolume4\Windows\System32\ntdll.dll	0.06
\Device\HarddiskVolume4\Windows\System32\combase.dll	0.05

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	svchost.exe
PID	772
Average Utilization (%)	0.37
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	0.24
\Device\HarddiskVolume4\Windows\System32\ntdll.dll	0.04
\Device\HarddiskVolume4\Windows\System32\rpcrt4.dll	0.03

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	svchost.exe
PID	1236
Average Utilization (%)	0.35
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	0.16
\Device\HarddiskVolume4\Windows\System32\ntdll.dll	0.03
\Device\HarddiskVolume4\Windows\System32\nlasvc.dll	0.02

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	svchost.exe
PID	1052
Average Utilization (%)	0.26
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	0.10
\Device\HarddiskVolume4\Windows\System32\ntdll.dll	0.04
\Device\HarddiskVolume4\Windows\System32\sysmain.dll	0.02

CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.

Process Name	svchost.exe
PID	788
Average Utilization (%)	0.25
Module	Average Module Utilization (%)
\SystemRoot\system32\ntoskrnl.exe	0.09
\Device\HarddiskVolume4\Windows\System32\ntdll.dll	0.05
\SystemRoot\system32\hal.dll	0.01

Information

Platform Timer Resolution:Platform Timer Resolution
The default platform timer resolution is 15.6ms (15625000ns) and should be used whenever the system is idle. If the timer resolution is increased, processor power management technologies may not be effective. The timer resolution may be increased due to multimedia playback or graphical animations.

Current Timer Resolution (100ns units)

156250

Power Policy:Active Power Plan
The current power plan in use

Plan Name	OEM Balanced
Plan GUID	{381b4222-f694-41f0-9685-ff5bb260df2e}

Power Policy:Power Plan Personality (On Battery)
The personality of the current power plan when the system is on battery power.

Personality

Balanced

Power Policy:Video Quality (On Battery)
Enables Windows Media Player to optimize for quality or power savings when playing video.

Quality Mode

Balance Video Quality and Power Savings

Power Policy:Power Plan Personality (Plugged In)
The personality of the current power plan when the system is plugged in.

Personality

Balanced

Power Policy:802.11 Radio Power Policy is Maximum Performance (Plugged In)
The current power policy for 802.11-compatible wireless network adapters is not configured to use low-power modes.



Power Policy:Video quality (Plugged In)
Enables Windows Media Player to optimize for quality or power savings when playing video.

Quality Mode

Optimize for Video Quality

USB Suspend:Analysis Success
Analysis was successful. No energy efficiency problems were found. No information was returned.



Battery:Battery Information

Battery ID	0272SamsungX865745
Manufacturer	Samsung
Serial Number	0272
Chemistry	LION
Long Term	1
Sealed	1
Cycle Count	27
Design Capacity	31502
Last Full Charge	27639

Platform Power Management Capabilities:Supported Sleep States
Sleep states allow the computer to enter low-power modes after a period of inactivity. The S3 sleep state is the default sleep state for Windows platforms. The S3 sleep state consumes only enough power to preserve memory contents and allow the computer to resume working quickly. Very few platforms support the S1 or S2 Sleep states.

S1 Sleep Supported	false
S2 Sleep Supported	false
S3 Sleep Supported	false
S4 Sleep Supported	false

Platform Power Management Capabilities:Connected Standby Support
Connected standby allows the computer to enter a low-power mode in which it is always on and connected. If supported, connected standby is used instead of system sleep states.

Connected Standby Supported

true

Platform Power Management Capabilities:Adaptive Display Brightness is supported.
This computer enables Windows to automatically control the brightness of the integrated display.



Platform Power Management Capabilities:Processor Power Management Capabilities
Effective processor power management enables the computer to automatically balance performance and energy consumption.

Group	0
Index	0
Idle State Count	6
Idle State Type	Power Engine Plugin
Nominal Frequency (MHz)	1300
Maximum Performance Percentage	107
Lowest Performance Percentage	40
Lowest Throttle Percentage	7
Performance Controls Type	Power Engine Plugin

Platform Power Management Capabilities:Processor Power Management Capabilities
Effective processor power management enables the computer to automatically balance performance and energy consumption.

Group	0
Index	1
Idle State Count	6
Idle State Type	Power Engine Plugin
Nominal Frequency (MHz)	1300
Maximum Performance Percentage	107
Lowest Performance Percentage	40
Lowest Throttle Percentage	7
Performance Controls Type	Power Engine Plugin

Platform Power Management Capabilities:Processor Power Management Capabilities
Effective processor power management enables the computer to automatically balance performance and energy consumption.

Group	0
Index	2
Idle State Count	6
Idle State Type	Power Engine Plugin
Nominal Frequency (MHz)	1300
Maximum Performance Percentage	107
Lowest Performance Percentage	40
Lowest Throttle Percentage	7
Performance Controls Type	Power Engine Plugin

Platform Power Management Capabilities:Processor Power Management Capabilities
Effective processor power management enables the computer to automatically balance performance and energy consumption.

Group	0
Index	3
Idle State Count	6
Idle State Type	Power Engine Plugin
Nominal Frequency (MHz)	1300
Maximum Performance Percentage	107
Lowest Performance Percentage	40
Lowest Throttle Percentage	7
Performance Controls Type	Power Engine Plugin