The Core SWX Nano-VBR98 7.4V Battery with D-Tap is designed for use with the Panasonic AU-EVA1, and select other Panasonic cameras. This clever solution provides a 12V D-Tap port often found in larger pro-style Gold or V-mount batteries, but in the smaller form of the original battery type. The D-Tap is a smart port with the ability to transmit SMBUS battery data. Features of the Nano-VBR98 include a push button, a four-LED power gauge, and compatibility with original Panasonic battery chargers. This battery will power the AU-EVA1 for approximately 5 hours on a full charge.