Kastar Battery Pack for Sony NP-FM30, NP-FM50, NP-FM70, NP-FM71, NP-FM90, NP-FM91, NP-QM50, NP-QM70, NP-QM71D, NP-QM90, NP-QM91D and Sony HDR-HC1, HVR-A1U, HDR-SR1, HDR-UX1 Handycam Camcorder Kastar Replacement Battery for Sony NP-FM30, NP-FM50, NP-FM70, NP-FM71, NP-FM90, NP-FM91, NP-QM50, NP-QM70, NP-QM71D, NP-QM90, NP-QM91D Battery Battery Type: Lithium-Ion; Battery Voltage: 7.4V Battery Capacity: 3600mAh Package Includes: 1 Battery Compatible with the original battery and charger