Powers your notebook so you can watch a movie, update Facebook, surf YouTube, play games or catch up on work. This battery grants you up to a reliable 3 to 4.5 hours of battery life[1] that keeps you connected and entertained no matter where you go. Slim battery sits flush with the bottom of your notebook. A clean look without adding weight or bulk to your notebook. HP's 1-year warranty guarantees you peace of mind with a long cycle life span. That's 365 days that you never have to ever worry about your battery. HP MR03 Notebook Battery Size: 8.16 in x 1.24 in x 0.87 in.