Attaches to the top of the ALEXA, ALEXA Plus, ALEXA Plus 4:3, ALEXA M body, ALEXA HD, ALEXA HD Plus, ALEXA XT, ALEXA XT M body, ALEXA XT Plus, ALEXA SXT EV, ALEXA SXT Plus or ALEXA SXT W and accepts V-lock on-board batteries. Note: This battery plate is not suitable for ALEXA LF cameras.