Is this possible? It has a 12v positive and negative connection that is used to run lights and charge RV batteries.
Depends on what you’re using it for. A couple extra LED lights? - sure, no problem.
A fatboy bandit, or the starter on your machine… forget about it. Won’t provide the amperage you need, and you’ll blow a fuse.
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So I could potentially use it to charge the 12v’s battery?
It would let you recharge the battery on your rig but only to a very limited degree and it will not power anything other than lights. If you have AGM batteries the alternator never fully recharges them, the finishing voltage is too low.
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Yes you can “maintain” 12v batteries but charge from a full drain, no. If you want to charge or run a 12v system and keep it full look up my thread for wiring a battery. I have a video on my YouTube channel on how I did mine.
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Thanks for the information gentlemen. Have a great weekend!
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I saw a video where a guy used a battery isolator and big fat battery wires back to the trailer. Alternator charged it. You have to plug in the trailer twice. First your 7 pin, then the two battery cable connects like on a forklift. I’ll try to find it.
Might have to upgrade the alternator.
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There’s been a few times when either my 12v battery has ran out of juice, or I forgot to charge it. I hook up jumper cables to my 12v hot water skid. It doesn’t charge the battery but it certainly runs it in a jam. Waste gas running the skid, but it works. This isn’t relevant to the post, but I threw it out there anyway.
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I get those off of UPSes. I forget what they’re called. Maybe Johnson connectors?
We use those types of connectors on a few car trailers with winches mounted on them to keep the battery charged up and let me tell you it is a noticeable difference between running a dual battery diesel truck and a single battery gas truck. I’m certain it would be perfectly fine with a 12 volt pump.
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They’re Anderson Power Pole connectors. Don’t buy the off brand as they are junk. You’ll need a crimp tool for the pins
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