Fancy Buying&reg; Battery For HP Pavilion dv4-2145dx dv6-2066dx dv6-1259dx dv4-1365dx DV5-1160US Battery type: Li-ion Replacement battery; Capacity: 5200mAh; Voltage: 11.1V; Cell: 6-cell; Color: Black; New battery constructed with advanced circuit board technology, including built-in thermal circuit protection for safety and stability. Grade-A cells for faster charging and more efficient power consumption Precision construction for optimal fit; CE and RoHS certification ensures quality, safety and peace-of-mind. Up to 500 charge cycles over the life of the battery Operation time: 2 - 3.5 hours. Actual operation time varies depending on types of the device and the way it is used. Friendly and knowledgeable Customer Support Staff available by email or toll-free telephone. No risk 30-day money back guarantee; 1-year full replacement warranty