Macoox is one of his virtually unknown Chinese brands. Yet it might just make a name by offering the smartphone with the battery offering the largest capacity: 9000 mAh. This makes it look like a small brick…  Some manufacturers want to improve the autonomy of smartphones increasing battery capacity rather than opting for less-intensive components that provide effective software optimizations. Gradually over the past year, we have seen the birth of smartphones to ever more generous batteries: 4000, 5000 or even 6000 mAh. But a new milestone has been reached: 9000 mAh. Is the ability