The ASUS ROG Phone 9 Pro comes with a 5800 mAh battery, up from the 5500 mAh on its predecessor, though the waistline is still 8.9 mm. We get 65W wired charging, 15 wireless and even reverse wired charging. Basically the phone becomes the power bank, providing 10W of power. We also get the in-pack charger with USB-C connector and braided cable.