Re: Waverunner - Battery won't recharge
could be a bad rectifier, or a bad plug conection from the stator or a bad battery conection, or a broken wire so start with the easy stuff and see what happens, and the fuses should be checked first, and it just may be a weak battery with a bad cell, if you find a cell that is low on water that is a good indication that the cell may be bad, 2 years is about all you should expect from a battery but an inexpensive volt meter will tell you the battery condition, charge the battery with a 1 amp charger for about 12 hours, test the voltage with the ski off it should be 12.5 to 13.5 volts with the volt meter conected turn on the starter and as it turns the engine see what the voltage reads on the battery. if it drops below 11 volts with a load it probably has a bad cell.