SPECIFICATION: Model Name: 1735. Battery Type: Lithium-Ion. Voltage: 11.1V. Capacity: 87Wh. Cells: 6-cells. Battery life: Up to 500 recharge cycles over the life of the battery. FIT MODELS: For Dell Studio 1735 1736 1737 KM973 RM791 US Compatible P/N: KM973 KM974 MT335 PW823 RM868 RM791 KM976 RM870 KM978 PW824 Quality Assurance: 100% 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 Service: 24 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.