My original adapter lasted for 3years. Since then, I have changed 3 adapters. One was broken just a few days after I bought it. One lasted for several month. I didn't give much expectation to those replacement adapter any more. but this ravpower adapter do exceed my expectation and have been working for more than a year. Lucky for me, i don't need to change adapter frequently. So I wonder how long have your repacement laptop adapter lasted? a few months or longer?