Battery life is always a big consideration when buying a new phone, and most big-name smartphones manage to pack in cells good enough to get you through a day or two.
And while the iPhone 7's 1,960mAh battery wasn't quite up to par this year, a new Chinese smartphone takes things perhaps slightly too far in the other direction.
The YAAO 6000 is a smartphone, likely to be released in China only, that comes packing a whopping 10,900mAh battery (via PhoneArena).
That's huge step up from the current smartphone offerings, such as the Galaxy S7's 3,000mAh cell, and even the new OnePlus 3T's 3,400mAh offering.
You might be wondering just how big a phone has to be to accomodate such a hefty battery, but the official renders don't seem to be too much larger than a standard device – though, there's no photos of the YAAO 6000 yet.
What's more, the battery itself seems to be removable, which means users should be able to swap in a spare – though quite why you'd need anything more than the 10,900mAh cell remains unclear.
The phone is up for pre-sale on Jingdong for around $220 (about £176), and we're not expecting it to make it to any markets outside China.
It comes with some rather uninspiring specs too, including 1GB of RAM, 16GB of expandable memory, and a 5.5-inch 720 x 1,280 display.
Running the whole show is a MediaTek MT6735 quad-core SoC, and in terms of cameras, the rear-facing setup is a 13-megapixel affair, while the front-facing shooter is 5-megapixels.