Re: Does an outboard engine recharge the battery when running like a car does?
I hate getting caught with a dead battery so I charge mine before every trip just because, but yes, the do charge if it is working correctly.
Easy to check, measure voltage with the motor off then again with it started and running, should be more when running, DO NOT disconnect the battery when the motor is running it will fry the rectifier or regulator, can't remember which but they are both expensive and the faster the engine is turning the more charge it puts out but don't run the engine above 1500 rpm without a load on it.