The Sony BP-U70 is a lithium-ion battery with a capacity of 72Wh that is designed for professional video shooting in both the field and studio. This battery communicates battery status data to the compatible camcorder viewfinders. It features a larger capacity than, and charges at the same time as, the previous-generation BP-U60.
The remaining capacity of the battery is displayed on the LCD monitor and viewfinder when the camcorder is powered on.
The battery incorporates a four-LED remaining power gauge.