Ultium PowerUP - Take charge of your charge. With the Ultium PowerUP app, you can connect to your GM PowerUP wall charger (when in Bluetooth range) to set up and customize your charging experience. SET YOUR CHARGE Set your power level. Don’t need a quick charge? Adjust your current settings down from the max 11.5kW. Protect the grid when demand is highest. MAKE IT YOURS Personalize your PowerUP Wall Charger and make it your own with options to name your charger and adjust LED light intensity