Superb Choice® 6-cell HP ProBook 4340s 4341s HSTNN-YB3K HSTNN-UB3KX 668811-851 RC06XL Laptop Battery Type: Battery Compatibility: HP ProBook 4340s 4341s HSTNN-YB3K HSTNN-UB3KX 668811-851 RC06XL Battery Type: 6 Cell Lithium-Ion Battery Voltage: 10.8V Battery Capacity: 4400mAh Parts: 1 year