purchased this, it does not work at all and was definitely never tested.  Unit had no battery when I first received (completely understandable).  I plugged it in and saw the charging icon show up, then nothing at all.  Later pressed on the space bar, heard the MacBook sound but nothing on the screen.  Looked up online how to reset with the keyboard and got the computer to go into recovery mode.  Then I tried to recover the operating system and then when I leave the recovery mode and power on there is a red cancel symbol telling me to go to a website.  On the site it gave troubleshooting but either didn't apply or directed me to go through the recovery mode and do what I already did.  Wouldn't recommend, but the return was easy through my local home goods and got a refund in about 1 week.