I usually like to wait 30-60 days (sometimes longer hehe) to leave a review because I want to make sure everything I buy is value for money. With that in mind, my review is late but my usage has been brief. I bought it to replace an original that no longer works. On arrival it worked perfectly (Lenovo Yoga 730-15ikb). But it's a pity my laptop broke so I only got to use it for 2 weeks so I can't say how long it lasts. But it was a cheaper purchase. than the actual branded replacement will cost me.