Windows 7: "Consider Replacing Your Battery"

New version: BatteryCare

Hi All.
Its my first post, unfortunately its complaining about the same problem.

My notebook: Asus F3JP, since 2007.

The mensage i obtain is: "79% available (plugged in, charging) Consider Replacing Your Battery".

I have migrated from OS Vista, one week ago. In the first day i calibrated the battery from BIOS and then all happened.

I think the Microsoft have to pay a new battery for all of us with the same problem.

Didn't feel like reading through the entire thread as no real solution seems available as of yet... In any case I felt like sharing my experiences of the issue:

Had XP on my thinkpad T61 until oct last year where I switched to win 7 retail.
Soon after I noticed a drop in uptime on battery but I thought it was just due to features of 7 like aero so I didn't pay much attention...
half a year later (or less) the battery became useless and it was only a protection against powerdown in case of disconnected AC.
A few months ago I bought a new 6cell battery (unoriginal) and apart from the Lenovo warning about the non original battery, everything ran smoothly and I was happy.
Now, less than 2 months later the battery is down to 18.90wh from 48.84wh (same result from power manager and hwmonitor)
One might think that this is caused by the first battery being old and the second one being unoriginal but that doesn't explain that I have an almost identical issue with my wifes dell latitude.
The dell battery also started deterioration fast after I installed win 7 and now it is so dead that the bios doesn't recognize it. The dell battery is almost 2 years old but dell still accepts responsibility and they will send me a new tomorrow.
The thinkpad however is a 2. hand corporate machine and I doubt I can get anything on warranty what so ever.
On both the Tp and the dell I am getting alot of warnings in the event log viewer: ": The embedded controller (EC) returned data when none was requested. The BIOS might be trying to access the EC without synchronizing with the operating system. This data will be ignored. No further action is necessary; however, you should check with your computer manufacturer for an upgraded BIOS."
The log reports 1.210 of these warnings between 18.05.2010 and today on the t61. Power manager reports battery condition down to "poor" along with the warning about nonoriginal batteries. Windows: "consider replacing your battery" and "there is a problem with you battery so windows might shut down suddenly"
Neither the original nor the unoriginal (obviously) battery qualifies for the lenovo battery-replacement program. Judging from a google search, many ppl are experiencing similar issues on various brands..

I wonder if this thread is alive still?
following an earlier post I let the t61 keep running after it hit 0%
Been running on "balanced" for 20 min now on 0%

Not much activity…but there are a few here that are still following this thread.

I dont think that that kind of battery use is THAT bad.
Take me for example. I have laptop mostly plugged in all of the time for past year. I was afraid after your post that I already destroyed it, but score is quite good:

Design Capacity 75900
Last Full Charge 72180

BTW this is my first post on this great forum.

i have a laptop emachine d725,,,,i also have the same problem... my battery indicator in tray marked "x" then it says "consider replacing your battery,,, my laptop is only 9 - 10 months old... i have a friend experiencing the same problem and we both use Windows 7 Ultimate (32 bit)....when we are using windows vista we didn't experience such problem like that,,,it just appear when we start using Windows 7 Ultimate (32 bit)....please help...(battery is too expensive...)

Seeing as Windows Vista doesn't even tell you when the battery is going/bad.
How would you have experienced this in Vista?

New Version: BatteryCare

New Version: BatteryCare