14.4 volt, 85Wh battery for XDCAM handheld camcorders and portable decks. The BP-U90 uses a communication line with the EX camcorder, whereby the precise remaining capacity can be displayed on the camcorders LCD and viewfinder.
The battery information display on LCD is available even while the camera power is off (not on EVF). Along with the BP-U30 and BP-U60, the BP-U90 also has LED displays to indicate the remaining capacity of the battery at the push of a button on the battery itself.