The BVM0255 V-Mount plate allows you to use 2 square Jupio V-Mount batteries * instead of 1 square Jupio V-Mount battery. It gives the opportunity to hot swap the batteries (change the empty battery while continue filming because of the second full battery). Thanks to the BVM0255 you never run out of power. 

The BVM0255 plate is also equipped with a D-tap output interface and LED indication for the battery status.

*This product only works with high quality Jupio square V-Mount batteries.