6 Hours with light but constant usage. Ex: Streaming video, Web, emails etc. Gaming wise 3-4hrs with heavy gaming. I run a separate monitor also and it lasts me about 4 hours. Depending on what you plan to use it for, this Laptop is built for gaming, video editing, etc... It's a great laptop but if you arent planning to do any gaming or graphics/ video editing... you may be able to find better deals. AGAIN Great laptop if you plan to use it the proper way! GOOD LUCK!