The Briggs & Stratton 84004958 Engine Battery supplies electrical power to support starting and operating compatible equipment. It provides energy to the starting system, helping the engine crank when the ignition is engaged. This replacement battery can be used when the original battery no longer holds a charge or provides reliable starting power. Check your engine model, battery spe... https://www.wholetoolbox.com/briggs-stratton-84004958-engine-battery/84004958.html