Smartphones with giant batteries of up to tens or tens of thousands of mAh are nothing new. We've seen Energizer Power Max P18K Pop, Energizer Hard Case P28K, Doogee devices, Ulefone and more. While famous brands usually only offer up to 6000mAh to 7000mAh. In the near future OnePlus may join Samsung and Tecno in offering a phone with a 7000mAh battery.
According to Digital Chat Station, OnePlus wants this device to be in the mid-range category. This means it might be under the Nord series or there might be a new series. Oppo will also offer more or less the same device. With OnePlus having Glacier Battery technology, which is a small but large capacity battery design, this device will definitely have a premium design.
OnePlus and Oppo are seen looking to compete with Samsung in the Galaxy F and Galaxy M market. They may also be aware that devices like the Tecno Pova with large batteries are attracting a lot of attention. Let's all look forward to further announcements about this mysterious device.