How is Trailer Battery Charged from Trailer 7-Way Connector

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Question:

I have a 18ft flat car hauler that came with a small break-away battery and charger. I have since replaced the breakaway battery with a full size deep cycle battery since the trailer now has a large electric winch, flood lights and 110v inverter. The problem is the tiny 1.5a charger like a 200011 cant supply enough current to charge the big battery. The 12v circuit on my trucks 7-pin connector is 35a. is there a suitable charger for this application that might give a 10-20a charge?

asked by: Steve G

0

Expert Reply:

If you wanted to run a maintenance charge to your trailer's battery you'll need to run wire directly from the battery's positive terminal to the 12 volt power circuit of the 7-way. You'll want to use 10 gauge wire like part # 10-1-1. There would be no need to wire in a charger as well since just the wire will deliver the maintenance charge.

It won't charge a dead battery though. You'd have to use a wall charger for that like the CTEK # CTEK56353 when the trailer is parked.

expert reply by: Jameson C

0

Answer 1

To answer your question yes, the Trailer Breakaway Kit Battery Charger part #20011 can be used to charge your breakaway battery while drawing power from the 12 volt auxiliary battery on your trailer. However, most local and state regulations require…

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Answer 2

Yes, you can use the Hopkins Trailer Breakaway Kit Battery Charger, #20011, with the motorcycle battery on your motorcycle trailer. Like you said, you would simply tie-off the blue wire since it will not be used. This charger will maintain the charge…

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Answer 3

When installing the Hopkins Trailer Breakaway Kit #20011, the black, red and blue wire are attached with the following procedure. The black wire is connected to the black wire in the battery box on the trailer. The red wire is hooked to the positive…

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Answer 4

Absolutely! If you would rather not connect the trailer to your tow vehicle, you can simply use a separate car/truck 12V battery to test the electric brakes on your trailer. You can apply power to the appropriate brake input pin on the trailer…

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Answer 5

To determine why you do not have any power on the blue brake output wire, I recommend starting at your brake controller. First, make sure the brake controller is on and receiving power. Most brake controllers have 4 wires, blue (brake output to…

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Answer 6

Battery chargers do get hot, especially if plugged in for long periods of time. If it is so hot that you can't even touch it then that would be a problem, a short somewhere either with the wiring or internal on the charger. On the wiring make…

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Answer 7

The blue wire on a brake controller is output to the trailer brakes. If that wire is not connected the trailer brakes will not be getting any power. If there is a break in that wire somewhere between the controller and the trailer connector then that…

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Answer 8

The ground circuit of trailer wiring does often times run straight to the frame of the trailer. This makes for easier ground wiring of all the circuits that are on the trailer wiring. Instead of having to route every ground wire back to the trailer…

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Answer 9

The black wire from the break away switch will connect to the blue wire from the break away box, as shown in the provided diagram. By 'brake wires' I'm assuming you're speaking of the wires connected to the brake magnets on your brake…

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Answer 10

I spoke with a technical adviser at Hopkins, the maker of this charger and he said the safe operating temperatures for this Trailer Breakaway Kit Battery Charger, part #20011, is between -20 degrees and 140 degrees Fahrenheit. The max current draw is…

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Answer 11

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 12

To find the load capacity for your axle you should look on the trailer VIN plate or sticker that lists the VIN number. The weight rating of the axle should be listed on that same plate or sticker. Also, the axle could have a tag or plate on it that…

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How is Trailer Battery Charged from Trailer 7-Way Connector

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