CWK New Replacement Laptop Notebook Battery for Samsung NP-RV511-A01 NP-RV511-A01UK NP-RV511-A02 NT-RV511 300E4C 300E5C NP300E4C NP300E5C NP300E4X-A02CO AA-PB9NC6B AA-PB9NC6W AA-PB9NC6W/US AA-PB9 Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 11.1 Volt (10.8 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Money Back. Buy with confidence!