Idx B-7478S (B7478S , B 7478S , B/7478S , b-7478s) Sony L Mount, High Capacity Li-ion Battery.
IDX B-7478S (B7478S) Sony L Mount, High Capacity Li-ion Battery 7800mAh, 57.72Wh. IDX, Highest Capacity Li-ion Battery (7800mAh) for the Sony HXR-NX5E / NX5M, HVR-Z1E / Z5E / Z7E, DSR-PD170 / 175, HVR-V1E and HVR-HD1000E Camcorders and also the IDX X10-Lite-S camera top LED light.