I have a 1999 Evinrude E70 4 stroke. Model E70PL4EEC I seems to not want to charge the battery. When I go out on the water the volt gauge will read in the norm range 13 to 14 v For about 5 min then it gos down to 12 and drains the battery over time. From reading through other forum post It looks like it is probably the stator or RECTIFIER/REGULATOR can anyone tell me how I can test these components before I start throwing dollars at it? Also I find it strange that it will charge at first then stops is this normal with these components when they fail. Thanks for any help you can provide!