For quite some time now, 5,000mAh has been the standard for smartphone batteries, often leaving users to carry battery banks or use a low-power mode. Now, realme is changing things by launching a smartphone with a huge 10,001 mAh battery, rather than just showing off a concept or a lab prototype.

The main feature here is realme’s Titan battery, a 10,001mAh cell that the company says can last a week. The number stands out, but what’s more impressive is how fast realme turned the idea into a real product. After showing a 10,000mAh concept phone last year, the company has now started mass-producing the 10,001mAh battery.