BP-U30/U60 uses a communication line with the PMW-EX1, whereby the precise remaining capacity can be displayed on the PMW-EX1's LCD and viewfinder. The battery information display on LCD is available even while the camera power is off (not on EVF). The BP-U30 and BP-U60 also have LED displays to indicate the remaining capacity of the battery at the push of a button on the battery itself.
