sure can ,got slot .

For ultrabook or slim notebook (even normal notebook) they all apply non removable battery NOWadays .

For notebook that have maintenance cover just open it , if dun have u need to open the whole bottom part , unscrew it ,

However some laptop with visible screw and some with invisible [manufacturer hide the screws inside the bottom stand rubber] .

If you're talking about the Y510P, the battery is removable.

i said can, i upgrade the RAM before, but i not advise beginner to do it

1) Need open few compartment

2) Warranty Void sticker is stick on above the screw which you must unscrew it in order to access the addtion ram slot