Who doesn’t want to have something help charge your battery out in the water? I did, so here is how I did it!
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Mercury Alternator Coil 855944T01 is the part number, and the rectifier is an 853811008
How to add a charging system to a Mercury 8hp Outboard motor
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Would this be the same part for a 2018 9.9 merc
Awesome !!! Thank you very much
It's called a rectifier. Chops Vac off the stator into Vdc. Very popular in residential and marine wind turbine electronics. A few $$ wholesale. I'm not sure if outboards need more than basics.
Is it possible to add a charging system to a 2006 3.5
Where do the ignition coil wires connect
Where do the ignition coil wires connect?
you get less volts when revving the engine because of the rectifier so that it doesnt overcharge the battery itll only put out about 14 volts
Hi there that did you connect the earth too? Many thanks.
Hi is it possible to do it on 6hp mercury 2019? Does they all have prepared mounting points for coil ?
Do you have links for items you bought I need to do this but I suck on eBay
I did exactly the same retrofit a couple days ago to an 88 mercury 20hp. Same process with slightly different parts. I added electric start a couple years ago
Get yourself an ammeter and see how many amps it is putting in at each speed. If it picks up amperage going into the battery even though it gives you a slight voltage drop, you will be alright. A typical 12 volt battery will charge up with as low as 13.7 volts as long as the amperage going into the battery is greater than the draw from your accessories.
If you are drawing 10 amps for example, but your charging coils are producing 30 amps, you are well within the required amperage to charge the battery in a timely manner. You can mount the ammeter where you can monitor it while you tool around with the boat.
Happy boating, and if you're a fisherman, catch a few for me too. 😉
Do yourself a favor and replace the magneto (the coil for the spark plug), it's been overheating, and it's liable to fail at any time, and the last thing you want is for it to fail out on the lake or in a situation where you need to get back to land fast because of an emergency or inclement weather that suddenly pops up.
Very cool John, thank you.