New Laptop Battery for HP ELITEBOOK 6730B 6930P HP COMPAQ 6530B 6535B 6735B HP PROBOOK 6440B 6445B 6540B 6545B [Li-ion 11.1V 5200mAh]- Battery type: Li-ion; Capacity: 5200mAh/56WH; Cells: 6-cell; Voltage: 10.8V; 100% brand new from manufacturer. Under 100% Aging Test. Up to 500 cycles life, low self-discharge, no memory effect; Dual IC chips provide protection against short circuit, over-discharge, overcurrent. Grade A Cell ensures fast charging and low power consumption; Built-in circuit protection ensures both safety and stability. Operation time for standard batteries(6-Cell, 4400mAh): Around 2 hours, the actual operation time will depend on how much electricity is required by the device and how you use it.