What size battery does it take to run a Mercury 85 hp outboard motor?
The battery required for a Mercury 85 hp outboard motor will depend on the model and year of the engine. Most newer models from Mercury will require a 12-volt battery with a minimum of 480 cold cranking amps (CCA). Older models may require a smaller battery, while models equipped with additional accessories such as power trim and tilt or onboard electronics may require a larger battery. To be sure, it is best to refer to the owner's manual for the specific model of Mercury 85 hp outboard motor, or contact a certified marine technician for assistance.