Can a Trailer Break Away Battery be Charged from the 7-Way Trailer Connector

Question

Question:

Can I run another wire from the positive side of the battery to the auxillary wire to charge my battery on a non charging break-away kit?

asked by: Brian

0

Expert Reply:

If you have a break away kit that does not include a charger, you can provide a charge to the battery using the 12 volt circuit or auxiliary circuit from the vehicle 7-Way trailer connector. However, using the 7-Way can overcharge a break away battery. It would better to add a charger designed for a break away battery like # 20011.

expert reply by: Michael H

0

Jeff S.

8/4/2020

How do I load test my breakaway battery to see if it is still good?

Reply

Chris R.

8/14/2020

A fully charged battery should get close to 13V at the terminal when testing - so if you start to drop lower than this it's a sign it either needs to be charged or replaced.

Reply

Answer 1

You may be able to use the existing 12V feed at the back of your truck to charge your trailer battery while driving but you will need to install a battery isolation solenoid to disconnect this line when the tow vehicle is off. Otherwise your trailer…

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Answer 2

To charge the battery in the Engager Trailer BreakAway Kit, #20099, you can attach the wire from the 12 volt circuit on the trailer side 7-Way (1 oclock position on the back of the trailer side 7-Way where the wires attach) to the input wire on the…

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Answer 3

The interior lights of your enclosed trailer are likely connected to the 12V (Auxiliary) power pin on the 7-Way of your trailer. You can verify this by applying 12V power from a separate battery to this pin and seeing if that supplies power to your…

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Answer 4

The side plates of the B&W gooseneck trailer hitch #BWGNRK1313 will mount on the outside of each frame rail of your 2004 Dodge 2500 8-foot bed. See the B&W video I included at the 7 min and 30 second mark. If your Firestone air bags like…

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Answer 5

I have attached the installation instructions for the Hopkins Engager Trailer BreakAway Kit, part #20099. This kit includes a charger and an LED tester and will work with single and tandem axle trailers. I have also attached a link to an installation…

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Answer 6

I spoke with my rep at Dexter axle and was informed your axle has a 3,500 lbs weight capacity, with a 58" spring center, and a 72" hub face. A comparable replacement is the Dexter Trailer Idler Axle Beam with EZ-Lube Spindles - 72"…

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Answer 7

The P-15 model information you provided for your Dexter axle does indicate its model, but you will still need to note its length and capacity before locating the correct replacement. If you are able to find a longer serial number somewhere on the…

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Answer 8

I reached out to my contact at Dexter Axle who said that your axle is rated for 3,500 lbs and it uses inner bearing #L68149, outer bearing #L44649, and the grease seal #58846. All of these can be found in the kit #BK2-100 if you are needing to…

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Answer 9

Some different brand names of trailer breakaway kits do originate from a common source, and this is also true for items like jacks, landing gear and steps. There really is not a lot to distinguish one from another, since their component parts are…

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Answer 10

Test the 12 volt power wire that feeds the charging circuit for the breakaway kit part #50-85-315 that you have installed on your trailer with a circuit tester like part #PTW2993. You should be getting 12 volts running into the battery box that will…

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Answer 11

You need a breakaway battery charger if you want to maintain the battery charge on your breakaway kit using your tow vehicle's 7-way trailer connector. The 12 volt battery on breakaway kits, like all batteries, will self-discharge over time.…

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Answer 12

First you will want to check the wiring of the Hopking Breakaway #20099. If the black wire from the breakaway box is not receiving 12 volts from the 7-way on your tow vehicle it will charge the battery. You will want to use a circuit tester like part…

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Can a Trailer Break Away Battery be Charged from the 7-Way Trailer Connector

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