The next OnePlus phone could have the biggest battery the company has ever put into a handset

The back of the OnePlus 15.

• The OnePlus 15R will have a huge 8,300 mAh battery
• Expect a cheaper, cut-down version of the OnePlus 15
• The phone is going to be launched on December 17

You can see from our OnePlus 15 review that we were very impressed with the latest OnePlus handset, awarding it a rare five-out-of-five star rating, and now there's a rumor that the next phone from the brand will raise the bar for battery capacity.