The BAB-HV battery adapter attaches to the back of the ALEXA, ALEXA Plus, ALEXA Plus 4:3, ALEXA M body, ALEXA Studio, ALEXA HD, ALEXA HD Plus, ALEXA XT, ALEXA XT M body, ALEXA XT Plus, ALEXA XT Studio, ALEXA SXT EV, ALEXA SXT Plus, ALEXA SXT Studio, ALEXA SXT W or ALEXA LF and accepts bebob High Load VCINE on-board batteries. The BAB-HV battery adapter has one additional Twist D-tap connector. Full functionality with ALEXA LF provided from LF SUP 3.0 on.