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New ThinkPad won't charge past 50% under Windows 8. What can I do to get 100% use of the battery and full run time on each charge?
The above symptom is associated with, but not limited to, the following systems:
Microsoft Windows 8
The battery health mode control, found within the Power section of the Lenovo Settings application allows customers to select whether they want to maximize lifespan of the battery by limiting charge levels, or maximize system run time on a single charge by fully charging the battery.
Start by clicking on the “Lenovo settings” application.
Next, scroll and click on the power component within settings.
Now, select "Always fully charge".
The setting “Automatically optimize for battery life” will limit charge to only 50% of the battery capacity. If you select the optimize setting and charge level is more than 50%, even with AC plugged in, the system will discharge from battery in AC discharge mode until the level reaches 50% where it will remain. Once you unplug, the battery will continue to discharge again until plugged in, at which time it will recharge to 50%. While this may extend useful life of the battery, this limits the available run time on battery.
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