Oneda New Laptop Battery for HP ProBook 4330s 4331s 4430s 4431s 4530s 4535s 4435s 4436s 4440s 4441s 4446s 4540s 4545s ; P/N: HSTNN-I02C 633733-1A1 QK646AA QK646UT PR06 PR09 [9-cell /6600mAh/71Wh] Brand: Oneda; Battery type: Li-ion; Voltage: 10.8V; Cells: 6-cell; Actual Capacity: 6600mAh/71Wh; Color: Black. Improve the service guarantee, Satisfaction guaranteed and backed by a one year replacement warranty. Oneda new high-quality batteries, 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection. Automatic power cut off at high electric current, voltage or temperature ensures safety and extended battery life. The actual operation time will depend on how much electricity is required by the device and how you use it.