The Zacuto SX-BKZ V-Mount Power Kit
made by Switronix includes two XP-L90S V-mount batteries, a GP-TS V-mount hotswap double battery mount, and a GP-2LSJ V-mount dual battery charger.
The V-mount hotswap battery mount must mount to the GP-S-ZAC V-mount battery plate (sold separately) in order to use. The GP-S-ZAC V-mount battery plate is made to screw into the Zacuto Red plate or the Zacuto Zwiss Plate (sold separately).
This kit can power all of your accessories with the necessary cables (sold separately).