It takes 3 hours to charge, but apparently only runs for up to 2 hours(per instruction manual). Turning it on all the way to 3 was sad. You barely feel any air. It's not cooling. You have to be 3 inches away to feel a VERY LIGHT breeze. Don't waste your money on this. My grandma has a different version of this that ACTUALLY feels like an AC, going to be purchasing that instead.The "mini ac" would not turn on, and the plastic lid on the top of the product (which supposedly houses the cold water) falls straight off, It doesn't even have hinges to the damn lid it just sits above the product with absolutely no security. The thing has the build quality of a poorly built lego set not what you would expect for around 50$. The thing looks nothing like how it was advertised not even worth 10.I was excited to get this unit. A huge disappointment. The humidifier does not work, and regardless of the temperature of the water, the unit blows warm air. The instructions are to call or email behomey.net. Do not invest your money. Truly dissatisfied and disappointed.Just not great at all, barely blows air, not cold, and not worth the $ charged.It was a lot smaller and no real power. Unable to cool anythingThis is a piece of crapdon't trust those reviews those are for different itemsThe AC doesn’t cool at all so I had to return it.This thing is smaller than mini. Micro I would say.