About a year and a half ago, I purchased an Acer TimelineUltra M3. Initially, I would get pretty good battery life and could use the laptop for 5-7 hours before it died. However, about 6 months ago I lost the charger that came with it and purchased an off brand one. After that, battery life was never as good and lasts less than 3 hours. It also takes more than 3 hours to get 100% charge. I am now forced to bring my charger with me everywhere I go. Considering that I have used this charger for almost half a year, would buying the official Acer charger restore my battery life to (more or less) what it originally was or is it too late for that?