DR. BATTERY Professional Series Replacement Notebook Battery: Dr. Battery Professional Series battery is made of quality materials, top grade battery cells to bring your laptop back to life and maintain your laptop service time. Safety First Criteria: All of Dr. Battery Professional Series batteries have short circuit, overheat, and overload protections to maintain the safety of usage. Condition: New Cell Type: Lithium Polymer Device Voltage: 11.4V Capacity: 3500mAh / 40Wh Warranty: 1 Year Compatible Laptop Model: Replacement for HP ProBook 450 G4 Y8A58EA, Y9F98UT, Y8B56EA, ProBook 430 G4 Compatible Battery Part Number: RR03XL, 851610-850, 851610-855, HSTNN-UB7C ** In prevent from purchasing incorrect battery, please compare with your original battery & check the Compatibility at [Specs] below.