CAPACITY: Holds two banks of six D batteries INCLUDED: Includes battery packs, mounting bracket with strap, and cables BANK FUNCTION: Bank 1 is for primary power and Bank 2 serves as a backup power source BANK FUNCTION: Bank 1 is for primary power and Bank 2 serves as a backup power source COMPATIBILITY: Compatible with Cuddelink J-Series, G-Series and new Dual Cell cameras and home units