The NFS2-3030 requires sealed lead-acid batteries with a capacity between 7 AH and 200 AH, charged by the AMPS-24/E power supply (Page 11, 15) [1].
To size the batteries for a fully loaded system, you must use the specific current draw formulas found in the power supply's documentation.
Identify all system components, including the CPU and up to 10 SLC loops (Page 11, 12) [1].
Consult the Power Supplies Calculations Table in the AMPS-24/E Manual to determine total standby and alarm current (Page 34, 61) [1].
Verify the physical mounting location; CAB-4 series backboxes can only house up to two 26 AH batteries internally (Page 16) [1].
If the calculated requirement exceeds 26 AH, the batteries must be installed in a separate enclosure such as a BB-100 or BB-200 (Page 20) [1].