The NFS-320 uses two 12-volt BAT Series batteries with a capacity ranging from 18 AH to 200 AH (Page 4) [1].
An external battery box is required for any battery configurations exceeding 26 AH (Page 2) [1].
The NFS-LBB (or red NFS-LBBR) is the specific enclosure required for batteries larger than 26 AH (Page 5) [1].
For seismic-certified applications using 26 AH batteries, the SEISKIT-320/B26 mounting kit must be used (Page 5) [1].
The system's internal battery charger maintains a float rate of 27.6 V (Page 2) [1].
