I make my coffee in large quantities (1.5 litre at once) weak and sugarless. It lasts me about 2 hours. ☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕☕😂