Desktop Battery Mode

[kukicola]

Hello (sorry for my english)

Some time ago i bought Alienware 14. I found option "Desktop mode battery change" (Right click on battery on taskbar).
It should charge my battery betwen 50%-100% when its pluged in. Unfortunately i always have 100%, so i think its not working correctly, can you help me?

 

[forJAT]

I typically will let my battery run all the way down once a month then let it charge back up. It may be pointless but I guess I have the old memories of batteries developing a memory. I did find the OLD article http://superuser.com/questions/205118/is-it-ok-for-the-laptop-to-always-be-plugged-in