CWK 7800mAh 9 Cell Capacity Battery for Samsung NP-RC520 RC530 NP-RC530 NT-RC530 RC710 NT-RV409 NP-RV511-S03NP-RV518 NP-RV520-A05IN 6c 300E7A-S01Au 300E7A-S01 300E7A-S02 300E7A-A03UK NP- Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 11.1 Volt (10.8 Volt compatible) Capacity: 7800mAh (Better than 6600mAh) 90 Day Money Back. Buy with confidence!