I have a Lenovo Ideapad Z560 Laptop. When I charge the battery on my laptop, it only charges up to 80%.
If I move the cursor over the battery icon, I found "80% available (Plugged In, Not Charging)".
Why doesn't it charge to 100%?
The Z560's Lenovo Energy Management Program in Windows 7 allows users to select charging to 100% to maximize battery RUN TIME, or charging to 80% to maximize LIFETIME of the battery.
If set to 80%, the "80% available (plugged in, not charging)" message will be displayed. This can be changed back to 100% at any time.
In other words, choose LIFETIME if you would like to charge up to only 80%. Choose RUN TIME if you would like to make it 100%.
The setting change can be done in Lenovo Energy Management.
The illustration below might be different from other Lenovo Energy Management software but will work the same way.