Home Standby Generator Battery Requirement

Updated by Juan Velez


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).

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