The product is clean and it works.However, I was only getting 1h worth of battery life, which is a little annoying provided the fact that the purpose of a laptop is to provide mobility, not to tie one to an outlet. After purchasing a new battery, I went ahead and proceeded to try to change the existing, one.A bit of extra info: this model NORMALLY comes with two batteries, making it a little powerhouse (and 1h is definitely not 80% of the original battery life).I went ahead and bough a new one (one of the two, to test if it improves the overall lifetime of the battery) and proceeded to replace it. To my surprise, it was missing!So this laptop, that had presumably been "professionally inspected, tested and cleaned by Amazon qualified vendors" - per the description -  was actually missing one of the two batteries.