IBatt iB-U2-A387H 5200mAh battery for Samsung R780, NP305E5A, RV510, NP355V4C, R428, NP550P5C, RV513, NP-R540, RF511, R620, 300V5A, R720, 355V5C, R538 , NP-R519, R418, NP-R525 , NP270E5E, NP300V4A, P580, 300E5C, R590, 350V5C