These will get written to the battery on next reboot.įor 64 bit systems, the registry key you are looking for is: Instead, you need to set them in the registry yourself. Using some compatibility mode trickery you can make it work, but it will not be able to set the charging thresholds. On Windows 8 and 8.1 the Power Manager is not officially supported. This is a problem with integrated batteries – for these systems disconnecting the battery using the BIOS might do the trick. This should reset the charging thresholds. If you want to reset your thresholds without using the registry or the app, turn off your ThinkPad and disconnect your battery for a few minutes. You will then need to install Lenovo Vantage, and use that to manage your thresholds. If you install Windows 10 while you have set charging thresholds, they will still be in effect after the upgrade. What if I upgraded my old Windows installation to Windows 10 and I have previous thresholds set? Am I stuck? When turned on, you can set both when to start charging and when to stop charging. To get started, first you need to access the power options.Ĭharging threshold settings in Lenovo Vantage (If you still have Lenovo Settings installed, please check the last section of this article) You should set your charging thresholds in Lenovo Vantage currently! If you cannot find it, you can download it from the Windows Store. In Windows 10 you use the Lenovo Vantage app to change charging threshold. You should find Lenovo Vantage in your Start Menu. But below that I want it fully charged again, so I am ready to be away from the power adapter. And it allows for a short meeting without the notebook charging back up again. The reason for choosing these settings is that 80% is still acceptable should I choose to use my notebook away from power. Fully charge the notebook (stop at 100%).Start charging when the charge goes below 80%.To quickly check the wear level of the battery you can now also use a small battery utility I created. These symptoms include a quickly raising wear level of the battery. So it does not really stress the battery but causes symptoms that then need curing, should you wish to use the notebook to it’s full potential. By using the charging thresholds, I wanted to prevent the battery from being constantly charged.Ĭharging all the time – in my experience – ruins the internal meter of the battery quickly, requiring battery gauge resets. These interruptions are often short meetings that only drain the battery a little bit, but enough to trigger a charging should I plug it in again (10-20%). I unplug my ThinkPad from AC power for short periods, and then use it again by plugging it in. I use charging thresholds to lower the percentage when the notebook starts charging, usually to about 60%-80%. Update : I added a link to my battery utility Why I use them? Update : I reorganized this article so Windows 10 information comes first, and added information about Lenovo Vantage Update : Added information about custom threshold in Windows 10 available again Update : Added link to battery information tool article. Update : This article is very popular, so I added some more information, mostly to Windows 10. Update : I updated the information regarding Windows 10. □ Instead I try to tell how and why I use them, and then proceed to show how they can be changed in different versions of Windows, should you still want to change these thresholds. In this article I will try not to settle that argument. Some theories say thresholds are needed to keep the battery healthy, some think they are useless and the battery will work the same just as it is. When reinstalling Windows, try the Lenovo disc images, as longer battery times have been reported, probably due to custom drivers.There are a lot of theories and information about ThinkPad charging thresholds. A can of compressed air may be useful too, and a bottle of isopropyl alcohol and cotton buds are good for cleaning, but not on the screen. The only tools you need for servicing a ThinkPad are a set of small screwdrivers and a nylon spudger (for taking the screen and keyboard bezels off), and possibly a pair of tweezers. Corporate bulk purchasers don't usually go for it. Not only will it have better brightness, colour, contrast and viewing angles - you will most probably more than make up the investment when selling it. When buying a new ThinkPad, consider taking the IPS screen option if possible, as it doesn't cost much. When buying a used ThinkPad, remember to check that the BIOS is not locked with a supervisor's password and that Computrace is not enabled and activated. For IBM/Lenovo ThinkPad laptop enthusiasts.
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