Hardly used it before I got rid of my laptop. It’s like new and I couldn’t even use my laptop without this thing! This is by far the best cooler I’ve ever used and on turbo is quiet and literally night and day when using it and also increased the performance of my laptop because it wouldn’t get as warm. Everything works perfect is probably has 5-6 hours or so on it. This was my second one and the first lasted forever but I lost it when traveling. I can add a usb if needed but I just use a usb c to my laptop and it powers it amazing. I can add the usb to usb if you’d like