Alliboo New Laptop Battery VI04 for HP ProBook 440 G2 450 G2 Series HP Envy 14-v000-v099 HP Pavilion 15-p000-p099 HSTNN-DB6I HSTNN-DB6K HSTNN-LB6J HSTNN-LB6K 14.6V 41Wh Li-ion 4cell (Black) Battery Type:li-ion;Voltage:14.4V;Capacity:41Wh;4 cell Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. About 500 recharge cycles over the life of the battery; CE-/FCC-/RoHS-Certified for safety. Operation time for standard batteries(eg, 2600mah): Around 2 hours, the actual operation time will depend on how much electricity is required by the device and how you use it. Warranty: 12 Months warranty, 30 days money return guarantee, 24 x 7 email support.