SpecificationsBattery Voltage: 11.1V. Capacity: 44Wh. Cells: 3-Cells. Battery life: Up to 500 recharge cycles over the life of the battery. Compatible Part NumberOD06XL BL06XL HSTNN-IB4F HSTNN-W91C 698943-001 698750-171 H6L25AA H6L25UT Compatible the Modelsfor HP EliteBook Revolve 810 Series Tablet, HP EliteBook Revolve 810 G1 Series Tablet. Quality Assurance100% new from manufacturer, every battery has passed factory testing, grade A cells ensure fast charges and low power consumption, built-in circuit protection ensures both safety and stability, guarantee your piece of mind while using the battery or storing it. Perfect Customer Service24 x 7 email support. Your satisfaction is extremely important to us. If you have any doubts, please click on seller store on right corner ask a question and contact us directly, professional and friendly customer service will be provied for you.