I have a lenovo Z570 and am confused as to how to maintain the battery so as to enhance its lifetime.
I normally keep my laptop connected to the AC - plugged in - even when it is 100% charged, and when there is a power cut the battery takes over. I have heard that perhaps I should drain out the laptop battery at least once a week to extend the life. Is this the proper way to use the battery?
Keeping your battery charged to 100% all the time may reduce the lifespan of the battery. If you open Energy Management and click on the button beside Optimize for Battery Runtime, you can choose to Optimize for Battery Lifespan.
This will limit the charge to 80% and it will lengthen the lifetime of the battery, although it will reduce the amount of time the laptop will run on each battery charge. Some versions of the Energy Cut power manager will offer options to Optmize battery lifespan that will limit charge to 50%.
It is not necessary to completely drain out the battery once a week.
If you know that you're going to be using it on battery and need longer run times, then you can change the setting back to Optimize for Battery Runtime before you use it on battery.