Yes, but you need a way to tell it whether you don't want to use the battery in a long time (so 50% charge is good), or whether you want to get up and go on the road soon --- where 100% charging is nice.
Allegedly Thinkpads have that. But I run Ubuntu on mine so I don't have access to the fancy bios setting utilities from Lenovo. I just snap the battery out. That seems to work for me.
