Home Standby Generator Battery Requirement
BATTERY REQUIREMENTS
Two (2) 12 volt Group U1 batteries with a minimum of 350 CCA each.
Battery size: 7 3/4 L x 5 3/16 W x 7 5/16 H inches (196mm L x 131mm W x 185mm H).
These batteries will range between 31 amp-hour (Ah) and 42Ah.
This is based on testing in extreme cold and heat -22° F (-30° C) to 104 ° F (40° C).