

That’s enough juice to get the phones from 0-100 percent in just 29 minutes, making it one of the fastest charging systems available in the U.S. Wireless charging is also present on both devices, but only the OnePlus 9 Pro has snappy 50W speeds that can charge it from 0-100 percent in 43 minutes. Each handset is equipped with a 4,500 mAh battery and supports 65W wired charging. In the case of the OnePlus 9 and OnePlus 9 Pro, both phones look like battery champs on paper. Whether it be a misbehaving app, mismatched settings, or a phone simply not having a large enough battery capacity, there are many reasons why a device doesn’t last as long as it should.


While tons of battery advancements have been made with smartphones in recent years, that’s not to say they’re perfect. The OnePlus9 and 9 Pro are two excellent Android phones - except when their battery life drains faster than expected.
