Two battery banks serve as primary power and back up power. Bank 1 serves as primary power and will run the camera. When bank 1 fails bank 2 will take over. When Bank 1 is restored it will resume running the camera, preserving bank 2 batteries for future use. 
 
  
Holds 2 banks of 6D cell batteries each (sold separately)
  
Two power cords included (C1/C2, C2/C2)
  
 Includes battery pack, mounting bracket, heavy duty strap and cables
  
12D batteries is power equivalent to 96 AA batteries
 
Compatible with Cuddeback camera Series:
E Series, C Series, G Series, J Series, K Series