Question on ST-3 12 volt port on left side of Bike - Ducati.ms - The Ultimate Ducati Forum
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post #1 of 11 (permalink) Old Apr 15th, 2019, 10:56 am Thread Starter
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Question on ST-3 12 volt port on left side of Bike

I thought i could plug in a battery tender in this socket to charge my battery over the winter.
Battery dead this morning.
Anyone have any knowledge about that 12v acc port?

thanks


Dave
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post #2 of 11 (permalink) Old Apr 15th, 2019, 12:43 pm
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I thought i could plug in a battery tender in this socket to charge my battery over the winter.
Battery dead this morning.
Anyone have any knowledge about that 12v acc port?

thanks


Dave
You should be able to, as long as the fuse is good and you had the right connector (with correct polarity). I've never done it, I've used the Tender style pigtail and now Shorai dedicated pigtail, but there is no reason it wouldn't work if everything was in order.

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post #3 of 11 (permalink) Old Apr 15th, 2019, 1:19 pm
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I have always charged all my ST's by plugging the Battery Tender into the port.

Bill Anderson & Darkwing Duc (06-ST3s, black) Edmonds, WA. USA
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post #4 of 11 (permalink) Old Apr 15th, 2019, 8:11 pm
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I have always charged all my ST's by plugging the Battery Tender into the port.
Me too. I'm with Dan, check the fuse and the polarity.

Mike
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post #5 of 11 (permalink) Old Apr 16th, 2019, 10:33 am
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It's a BMW Type fitting port. I used it for my heated gear and fitted a Marine Grade 12v power outlet to the other side.
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post #6 of 11 (permalink) Old Apr 16th, 2019, 7:32 pm
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I've used the 12V port to trickle the battery, so it should work.
BUT: I've had batteries go bad over the winter while on the charger/maintainer. So I've been using a 24 hr. timer, along w/ the charger. It gives a fresh look at the battery each day, and always goes into the charge mode, and then float (then off, and repeat). 15 year young battery in my Corvette, and I get typically about 10 years on my bike batteries.

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post #7 of 11 (permalink) Old Apr 17th, 2019, 12:57 am
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Since I acquired my 04 St3 2 years ago I have left the battery on tender with a CTek charger. I use a Powerlet adapter to SAE connector. With this I can either use the Ctek to charge or attach a Motopressor pump in the event of a puncture. There is a 20A fuse under the seat
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post #8 of 11 (permalink) Old Apr 21st, 2019, 8:40 pm Thread Starter
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I plugged in but didn't look at the charger lights. It seems I can be plugged in but not making a good connection.
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post #9 of 11 (permalink) Old May 1st, 2019, 8:03 pm
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You should also check the plug at the back of the outlet has not fallen off. Mine did that periodically until I bent the spade terminals a little to tighten the connection. First battery lasted 13 years charging through the port.


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post #10 of 11 (permalink) Old May 13th, 2019, 1:05 am
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Quote:
Originally Posted by DaveZander View Post
I plugged in but didn't look at the charger lights. It seems I can be plugged in but not making a good connection.
Mine does that sometimes too. I wiggle it a little and it’s fine. I’ve gotten in the habit of looking at the LEDs on the Battery Minder to make sure before I leave it.

Michael
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