how to do with windows 7 battery message
When upgrade laptop from XP or Vista to Windows7, you may has got a message as: “Consider replacing your battery. There is a problem with your battery, so your computer might shut down suddenly.” You know that the battery is good. What do you do?
Some of the suggestions for repair center on upgrading the BIOS. And while some users at a forum have tried that, they continue to report that the problem has not gone away.
The most common complaint seems to be that notebook battery life which used to last between 1.5 hours and 2 hours, is now less that 30 minutes. Some users at the forum are down to 15 minutes of battery life time.
Indeed, some users have complained that their batteries have been permanently damaged by the drainage problems.
Other problems reported are that the laptop will suddenly go into hibernate mode without warning.
A Work Around
It could help to avoid automatic switching off and keep the information about battery charge:
Setup Critical battery action to ‘Do Nothing’. Use the powercfg.exe tool. Essentially change the settings to “do nothing.” Here is how to do that:
- Activate the power scheme you want to modify.
- Open an elevated command console (windows key, type ‘cmd’ in start menu, press “ctrl+shift+enter”, click ‘continue’)
- Execute “powercfg -setdcvalueindex SCHEME_CURRENT SUB_BATTERY BATACTIONCRIT 0″
- Your current power scheme will show “Battery->Critical battery action->On battery: Do nothing” despite the option being unavailable in the drop box.
Note that this workaround is not a solution. Your battery drainage will still occur, but the messages will not appear.
Calibrate the Battery
Another way to address this issue is to pursue the following strategy: completely drain the laptop and attach the laptop AC adapter to replenish the battery system.
- Fully Charged Up the Laptop Battery to 100 % , then unplugged power cable, and I let the battery drain. Upon reaching 99 % drainage you will start to get the message … consider replacing….
- When the battery is fully drained, laptop goes into hibernate. Power it back on but then it shutdowns completely.
- Checked Bios to confirm if there was any power was left; it had 2 % left.
- Wait 15 minutes to completely drain the laptop of any battery power and confirm that it can not be powered on.
- Remove the battery; then in this condition while the battery is out press the power button this will drain the system of any power left in the laptop.
- At this stage the laptop should be fully drained now.
- Plug in the AC adapter cable to the laptop and wait 5 minutes. Power up the laptop.
- Under this process while charging the laptop you should not get the error message.
This process should allow you to restore your laptop battery to it’s optimum level.
Source of the Problem
The laptop drainage issue dates back several months, to the Windows 7 beta. But many others state that the problem became more visible until the final “release to manufacturing” (RTM) build. This change in behavior happened when Windows7 went from an RC to RTM.
source: http://windows7news.com/2010/01/31/battery-life-problems-on-laptops-with-windows-7/
Admin,
We are investigating the battery life issue in conjunction with our hardware partners, which appears to be related to system firmware. We are working with our partners to determine the root cause and will update the Windows TechNet forum (available here: http://bit.ly/cobVvf) with information and guidance as it becomes available.
Jessica
Microsoft Windows Client Team
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