Good response and shipping time; I ordered on a weekend, it shipped on Mon and arrived by Thur. The price was approximately 1/3 the OEM quote. This is my second replacement charger from Chargerbuy for the same computer; the first replacement lasted 23 months. Some sources indicate that it is the number of cycles that determine the life of the charger: I estimate that it recycled 600 to 650 times. I do try to follow the LBD new charger instructions initial charges and recycles, not leaving it recharging "constantly" and recycling at least once per week. My biggest 'sin' would be plugging in when charger power drops below 8-10% to avoid having to reboot and sign in after a full discharge computer shut down.