Mercury Outboard 50HP 4-stroke 2005

[Robert Wehkamp]

My motor is not charging the battery. At the end of the day fishing the
battery is empty and I need to recharge it with an external charger.
Otherwise the motor runs perfect.

[coueytwo]

Check the out put from your rectifier or rectifier & regulator assy, if you have a tachometer on the boat is it working?