Battery powered electric motor-driven fire pump system and method

A battery powered electric motor-driven fire pump system (58) for maintaining water pressure in a fire sprinkler network (20), the fire pump system (58) comprising:

• a fire pump controller (18) comprising a fire pump controller logic (24), a battery charger (62) and a plurality of starting contactors (48, 50);
• a battery pack (60) connected to said battery charger (62) and to said plurality of starting contactors (48, 50), said battery pack (60) rechargeable by said battery charger (62);
• an electric motor (64) powered by said battery pack (60) through said plurality of starting contactors (48, 50);
• and
• a fire pump (30) drivable by said electric motor (64);
• wherein when said fire pump controller (18) detects a drop in water pressure in the fire sprinkler network (20), said fire pump controller (18) activates said electric motor (64) to drive said fire pump (30) to restore water pressure in the fire sprinkler network (20).