1st unit bought from seller Chrome Source which was horrible. The mac arrived rattling around inside a medium sized Fedex box. Opened it to find the mac was just wrapped in single sheet of bubble wrap then tossed in the box. No fragile label or anything on the outside. Luckily the cosmetic appearance was still good. However, I tried to power on and battery was completely dead. Plugged it in, turned it on and had to wait about 2 hours for battery to fully charge to test it. Checked the battery life and found the "Battery Service Recommended" warning. It had a total of 749 cycle counts on the battery and 4049 mAh life remaining. Nowhere near the guaranteed 80% battery life or better on this unit. The unit was very dirty, hair and crumbs falling out of keyboard and every port including power port had dirt and lint built up in it. This is by far the worst "renewed" product I have ever bought. I immediately contacted seller, took them 2 days plus going through Amazon customer service to get a response offering to replace. I opted to just return it as I already purchased a second unit from Platinum Deals which showed up very clean, in like new cosmetic condition, packaged well in an aftermarket computer box, full charge on the battery that had 6100 mAh of battery life remaining well over 80%. The second unit I kept. Point is, be careful what seller you go through. I would absolutely buy from Platinum Deals again but will never purchase anything from Chrome Source again. I will be leaving a positive review on the second unit purchased from Platinum Deals.Update: For whatever reason I can only leave a single review even though I purchased 2 of these from 2 different sellers. I am leaving the negative star rating due to my first experience because I feel that is more important for others to see but hopefully my entire review will be read. As far as the 2nd unit purchased from Platinum Deals, I give it 5 stars in all categories.