Generac Air Cooled Battery Size Recommendations:
These are 12 volt automotive type batteries, always refer to your owner's manual for specific information.
• 8 kW: Group 26R, 12 Volt, 350cca minimum
• 10-20 kW: Group 26R, 12 Volt, 525cca minimum
Note: cca = cold cranking amps
21st of January, 2011