[Q] 15 minutes 0% to 100% Battery? topic

I have a friend at the office that can basically charge his phone from 0% to full in about 15 minutes. He's being a butthead and not sharing his method. Has anyone been able to achieve this and how did you do it? What settings/ROM/Kernel combo makes this happen?

Sent from my Nexus 6 using XDA Free mobile app