The OnePlus 15 is a high-end smartphone with a large battery that you can charge superfast. This smartphone has a 7300mAh battery that easily lasts all day. With a separately available 120W fast charger, the battery is about 90% full within 30 minutes. The OnePlus 15 is suitable for the most demanding tasks, like 3D games. You can buy these OnePlus smartphones as a separate device at Coolblue.