Anton Bauer NAB provides time for a new Battery Mount for Sony EX3 before. The QR-EX3 can be Anton-Bauer Ã‚Â® 90 Packs Dionic or Hytron Ã‚Â® 50 with 14.4v on the back of the EX3 affixed. The 90s, up to 6.5 hours running time, the 50s up to 3.5 hours available. For the Sony EX1 is consistent with the QR-EX1 mount an appropriate solution is available - but here is the battery mounted below the camera. Pricing and availability are not known to us so far.