CWK New Replacement Laptop Notebook Battery for Samsung R718 NP-R520 NP-R418 NP-R420 NP-R518 NP-R470 NP-R517 NP-R519 E251 E152 E252 E372 300E 300V NP300V NP300E NP-300E NT300V Q430 P230 P428 P430 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!