I have been using the mouse for a few weeks now (every day for at least 4 hours, more like a passionate gamer^^) and I have charged it 2 times so far. Unfortunately I can't tell you how much the battery specifications are correct, but I can say that the battery lasts a very long time and even if it needs to be charged, this is done quickly thanks to the Usb-C cable. I hope I could help :)