Product details:

HP HSTNN-LB7S Battery This HP HSTNN-LB7S battery uses the highest quality lithium-ion battery cells and components that charge faster and last longer. This HP HSTNN-LB7S laptop battery is rated at 11.1 Volts and 33 Whr and will typically last 4.5 hours on a full charge. You can get longer life by dimming your screen and closing unused programs. The higher capacity battery cells inside this cartridge have an energy capacity of 33 Watt Hours.Replaces these HP part numbers: 916366-421 916366-541 916811-855 BK03XL HSTNN-LB7S HSTNN-UB7G TPN-W125