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Laptop battery discharges so fast ..

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Hy

2 weeks until now my laptop battery discharge so fast (maximum 30min) .. even I'm not doing anything special that does require power from it .. I use this power plan & windows 7 ultimate . Any solution for this issue ? I simply cannot find a decent answer .

Battery: 6-cell lithium ion, 55WHr

Thanks!

post-18459-12746099423175.png

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How many years you are using that lap?

my laptop also same trouble.

your battery life is coming down. it may come down to 15 mins backup time. you need to replace with the new battery.

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2 years or so .. any link with compatible battery & reasonable price ?

Thanks .

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Maybe if you actually gave some info on what laptop you have, you would receive a link in return.

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If you load up a live Linux disc, you can check the stats of your battery such as its capacity and charge rating. Great for troubleshooting as the battery may be ok, just that there is a process running in Windows killing it in 30 mins.... :unsure:

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What's the make and model of your laptop?

My mother has an HP 620s and the battery now discharges in about 3 minutes or so. Even in Linux - which is now it's primary OS.

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Chances are your battery capacity is gone. I'm going to take a guess and say u keep the battery in the laptop while always on AC power. The thing is with Li-On batteries, the cell structure gets weakened when u keep them at full charge for long periods of time. They recommend storing Li-On batteries at around 50% charge to reduce capacity decreases over time.

You basically need a new battery.

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Run "powercfg -energy" in an Admin Command Prompt and paste the results.

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Here it is :

Power Efficiency Diagnostics Report

Computer Name CARMEN-PC

Scan Time 2010-05-24T14:27:17Z

Scan Duration 60 seconds

System Manufacturer Hewlett-Packard

System Product Name HP Compaq 6910p

BIOS Date 02/20/2008

BIOS Version 68MCU Ver. F.13

OS Build 7600

Platform Role PlatformRoleMobile

Plugged In false

Process Count 39

Thread Count 510

Report GUID {0eb1e96b-fa64-44d6-91c5-be4487a0c935}

Analysis Results

Errors

USB Suspend:USB Device not Entering Suspend

The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use.

Device Name USB Root Hub

Host Controller ID PCI\VEN_8086&DEV_2832

Host Controller Location PCI bus 0, device 29, function 2

Device ID USB\VID_8086&PID_2832

Port Path

USB Suspend:USB Device not Entering Suspend

The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use.

Device Name USB Composite Device

Host Controller ID PCI\VEN_8086&DEV_2832

Host Controller Location PCI bus 0, device 29, function 2

Device ID USB\VID_046D&PID_C521

Port Path 1

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 (%) 4.31

Platform Power Management Capabilities:PCI Express Active-State Power Management (ASPM) Disabled

PCI Express Active-State Power Management (ASPM) has been disabled due to a known incompatibility with the hardware in this computer.

Warnings

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) 12500

Maximum Timer Period (100ns units) 156001

Platform Timer Resolution:Outstanding Timer Request

A program or service has requested a timer resolution smaller than the platform maximum timer resolution.

Requested Period 20000

Requesting Process ID 2988

Requesting Process Path \Device\HarddiskVolume1\Program Files\Mozilla Firefox\firefox.exe

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.

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 firefox.exe

PID 2988

Average Utilization (%) 1.58

Module Average Module Utilization (%)

\SystemRoot\system32\ntkrnlpa.exe 0.49

\Device\HarddiskVolume1\Windows\System32\Macromed\Flash\NPSWF32.dll 0.26

\SystemRoot\System32\win32k.sys 0.21

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 (%) 0.35

Module Average Module Utilization (%)

\SystemRoot\system32\drivers\spsys.sys 0.14

\SystemRoot\system32\ntkrnlpa.exe 0.11

\SystemRoot\System32\Drivers\cng.sys 0.03

Platform Power Management Capabilities:Wireless access point does not support WMM Power Save

The wireless access point the computer is connected to does not support WMM Power Save Mode. The Wi-Fi modem cannot enter Power Save mode to save energy as defined in Wireless Adapter Power Policy.

SSID Office Wireless

MAC Address 00:22:6b:61:21:3d

Information

Platform Timer Resolution:Timer Request Stack

The stack of modules responsible for the lowest platform timer setting in this process.

Requested Period 10000

Requesting Process ID 2988

Requesting Process Path \Device\HarddiskVolume1\Program Files\Mozilla Firefox\firefox.exe

Calling Module Stack \Device\HarddiskVolume1\Windows\System32\ntdll.dll

\Device\HarddiskVolume1\Windows\System32\winmm.dll

\Device\HarddiskVolume1\Program Files\Mozilla Firefox\js3250.dll

\Device\HarddiskVolume1\Program Files\Mozilla Firefox\xul.dll

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:Video quality (Plugged In)

Enables Windows Media Player to optimize for quality or power savings when playing video.

Quality Mode Optimize for Video Quality

System Availability Requests:Analysis Success

Analysis was successful. No energy efficiency problems were found. No information was returned.

Battery:Battery Information

Battery ID 00343 2008/03/04Hewlett-PackardPrimary

Manufacturer Hewlett-Packard

Serial Number 00343 2008/03/04

Chemistry LIon

Long Term 1

Design Capacity 4439

Last Full Charge 4439

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 true

S4 Sleep 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 3

Performance (P) State Count 5

Throttle (T) State Count 8

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 3

Performance (P) State Count 5

Throttle (T) State Count 8

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Looks like your battery is fine. You might want to adjust some of your settings in the advanced power options. Especially graphics card settings, as those will drain your power faster than anything else.

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in this morning battery kept me alive 14min :( ..

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Looks like your battery is fine. You might want to adjust some of your settings in the advanced power options. Especially graphics card settings, as those will drain your power faster than anything else.

I know this thread is dead, but wanted to clarify something in case someone (as I just did) finds this when searching.

Actually, the battery is dead. You'll need to replace it. :(

Xiphi is absolutely correct in asking for "powercfg /energy" and his analysis of the same is also correct - assuming that the results provided were actually true! On some older systems (including this one), the BIOS will lie and report the "Current Capacity" as the "Design Capacity". :wacko: Whether you attribute this to malice (hiding the fact so they don't have to pay for the battery during the warranty) or incompetence (Older versions of Windows didn't report this data point) is up to you. The fact that the two numbers are exactly identical is a tell-tale sign. Maybe, just possibly, if you checked right when you first bought the computer you would get identical numbers.

Also, I think that the battery capacity numbers are low to the point that they are missing a digit. :)

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What's the make and model of your laptop?

My mother has an HP 620s and the battery now discharges in about 3 minutes or so. Even in Linux - which is now it's primary OS.

I am thinking Linux is the reason for the battery drain. I have had two instance where the battery have drained to less than thirty min after using Linux for few weeks.

Last year my battery drained low(After i installed Linux side with Windows) and had to call Dell and they replaced it for free.

It has been fine for more than year and then a month ago i installed Linux and now windows 7 shows warning and asks me to consider replacing the battery.

Now my battery is somewhere in 40 min range and i have stopped using Linux. A month ago my battery was giving me a solid 1.5 hours.....

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