SpecificationsBattery Voltage: 11.4V. Capacity: 48Wh. Cells: 3-Cells. Battery life: Up to 500 recharge cycles over the life of the battery. Compatible Part Numberfor RR03XL RR03048XL, HSTNN-PB6W HSTNN-LB7I HSTNN-UB7C, HSTNN-Q01C HSTNN-Q02C HSTNN-Q03C HSTNN-Q04C HSTNN-Q06C, 851477-421 851477-541 851477-831 851477-832 851610-850 Compatible with Laptop Modelsfor Hp ProBook 430 G4 Series for Hp ProBook 440 G4 Series for Hp ProBook 450 G4 Series for Hp ProBook 455 G4 Series for Hp ProBook 470 G4 Series for Hp ProBook 440 G5 Series for Hp ProBook 450 G5 Series for Hp ProBook 470 G5 Series for Hp mt20 Series Quality Assurance100% new from manufacturer, every battery has passed factory testing, grade A cells ensure fast charges and low power consumption, built-in circuit protection ensures both safety and stability, guarantee your piece of mind while using the battery or storing it. Perfect Customer Service24 x 7 email support. Your satisfaction is extremely important to us.