Hard drive replaced with SSD 500 Gb.  

Ram upgraded to 16 Gb.

Battery replaced approximately 12 months ago due to original battery not holding the charge.

Works great except:

1.  Battery shows "Service Recommended" warning sign.

2.  Battery "usually" holds charge, but sometimes drains out without any warning.  So, I usually use this with charger plugged in. (I will send the charger together)

3.  The protective film covering the screen was peeling off, so I had to clean them out few years ago.  Now, you may only see very tiny residues around the edges.

4.  There are little dings and scratches all over the body.