HWG 4GVGH Battery (6-Cells) Compatible Precision 5510, XPS 15 9550 Series, Fits P/N 4GVGH 1P6KD (11.4V 84Wh) Battery type: Li-ion; Capacity: 84Wh; Cells: 6-cell; Voltage: 11.4V. Compatible Models:Dell Precision 5510, XPS 15 9550 Series, Compatible P/N 4GVGH 1P6KD 100% NEW from manufacturer; Up to 500 recharge cycles over the life of the battery. Every battery has passed factory testing; Durable grade A cells battery; Quality assurance.Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Warranty: 24 x 7 email support; 12-month hassle-free warranty; Fulfilled by Amazon.