Bought a second charger for Lenovo 11e. While it's not a true Lenovo, it gets the job done from a functional standpoint. I've been using it for a few months now with no problems. The reason for the 4 stars vs. 5 has to do with a design 'feature' that is problematic even on genuine Lenovo hardware (which would also have gotten 4 stars). Most power adapters have a detachable cord to plug into an outlet (so you can use the same charger in different countries with different outlet designs). That cable tends to stretch, and the only notification is a low-battery alert when you think you're plugged in. Lenovo cables pull out, the aftermarket charger might be a bit more prone to it.