Review on 🔌 UL Listed 10 Ft USB-C Car Charger for Lenovo ThinkPad X1 Tablet Yoga 5 Pro, L480, L580, T470, T480, T570, T580, TP25, X270, X280, Chromebook S330, C330, C630, C930 - DC Adapter Power Cord by Daniel Ogbebor

Unfortunately the new Intel firmware disables its TURBO BOOST when running on batteries. That's why I use this charger, even though my batteries can be fully charged. Then I can do single-threaded calculations twice as fast. (By the way: Turbo Boost is 100% automatic. All you need is computer tethering.) Disclaimer: I was promised a $3 credit for writing a review, but I'd write that anyway, lol.