Giving a budget laptop a 20 HOUR battery! | Part 1

In this video, I try and get my ThinkPad T580 to be as long lasting as possible. I explain how battery life works, how watts interact with cpu speed, undervolting, and a battery upgrade. Sorry for not uploading for a while, here's a TEN MINUTE video to satiate your lack of apcs content! There will probably be another one very soon. I do say it is part 1, but really it is part 3 because of the previous 2 videos I did about the laptop. CHAPTERS: 0:00 Intro 0:29 My history with battery life 1:46 How battery life works 2:40 Undervolting 3:22 MORE Performance? 3:44 Process Node 4:13 How to undervolt 5:14 Watts vs Clocks 5:57 How efficient is it? 6:54 New 104Wh Battery 8:18 UPGRADING the battery 9:25 Outro