yet another dumd question,

[toey77]

i have a 1971 100hp Evinrude, am curious to know does this motor have a charging system for my battery or does it only make enough power to run itself. i am assuming it should have a magneto to charge the battery and if it does is there a way i can test this to see if it is working IE like testing the alternator on you car, and is it also possible to connect a charge lite to this to tell if it fails like a car alternator does

 

[ezeke]

Re: yet another dumd question,

It does, but you need a working rectifier, OE part # 0583408 or CDI 153-3408.

Navigate to your motor's parts catalog and see the ignition diagram here: http://shop.evinrude.com/

With the engine off, read the voltage at the battery, then read it again with the engine running at >1000 RPM. If there is no change, test the rectifier: http://forums.iboats.com/showthread.php?t=190638

Your rectifier also has a separate voltage regulator, called a clipper.

 

[F_R]

Re: yet another dumd question,

i have a 1971 100hp Evinrude, am curious to know does this motor have a charging system for my battery or does it only make enough power to run itself. i am assuming it should have a magneto to charge the battery and if it does is there a way i can test this to see if it is working IE like testing the alternator on you car, and is it also possible to connect a charge lite to this to tell if it fails like a car alternator does

Ever notice that many/most newer cars have a voltmeter on the dash? That is the simplest type of charge indicator and you can install one with a minimum of effort and expense. As ezeke said, the voltage should be higher when it is running. That assumes you aren't drawing off more current that it is producing---like with a power-hungry accessory of some sort.

 

[toey77]

Re: yet another dumd question,

ok thanks for that guys, i dont have any accessory atm i am rebuilding the boat and just getting all the nasesatys worked out that i need, now i know i can run a stereo and UHF and not have to worry about draining the battery when on the move, but i will still be installing a second battery and a solar panel to charge it when stationary

 

[Silvertip]

Re: yet another dumd question,

You better forget the solar panel. Solar panels do not have enough output to "charge" a battery but they can be used to "maintain" it. You would need a panel as large as your boat to serve as a "charger".

 

[tx1961whaler]

Re: yet another dumd question,

ok thanks for that guys, i dont have any accessory atm i am rebuilding the boat and just getting all the nasesatys worked out that i need, now i know i can run a stereo and UHF and not have to worry about draining the battery when on the move, but i will still be installing a second battery and a solar panel to charge it when stationary

Just don't go crazy with the stereo. That motor may only have a 9 amp charging circuit on it. It's certainly not going to keep up with a 1000 watt stereo.