E5-575 Question about battery

sanjuro
sanjuro Member Posts: 1 New User

Hello,

 

I was reading the user manual to know more about the battery, when I came across those two statements:

 

 

"The useful lifespan of the battery is adversely affected by the following usage patterns:

Using the computer on constant AC power.

 

Optimizing battery life (...) You are advised to follow the suggestions set out below:

Use AC power whenever possible, reserving battery for mobile use."

 

 

Isn't it contradictory? Constant AC power is bad but use AC power whenever possible. I don't get it.
Or does that mean we should plug it on AC power but then we should it turn off and unplug it when we don't use it?