We use the GRL A1 and Power Suite Pro Software to show compare how the Samsung Galaxy S10 5G get closer to Google Pixel 3 XL's charging speed while maintaining similar battery temperature as the Samsung Galaxy S10+ using a 25W Galaxy S10 PPS Charger. We look at battery temperature/voltage/current, VBUS data, and USB PD negotiations and show how USB PD 3.0 PPS variable voltages are different from USB PD 2.0 fixed voltages.