Connecting Battery Charger to Two Parallel Batteries

Question

Question:

I have a 10k electric boat winch that I want to connect directly to the trucks batteries so it will automatically stay charged. Being a duel battery system, do I just wire it as a single battery system? Does it matter which battery I connect to? The truck is a 2005 F350 diesel duel battery system 12V system. What would you suggest. The winch is a Fulton 10k electric winch. 3000# boat. Thanks

asked by: Steven V

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Expert Reply:

Connecting a charger to two batteries in parallel really will be the same as wiring them in parallel. You'd put one terminal on one battery and the other on the other battery.

expert reply by: Jameson C

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Answer 1

That's a hard figure to give as different winches draw different amounts of amperage and they also draw different amounts of amperage based on how close to the capacity the winch is at. A handful of hours is commonly the amount of time for most…

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Answer 2

The Bulldog Winch Trailer Winch #BDW10039 is 24" long x 7-1/4" wide x 7-1/4" tall so it will have no issues fitting on your recessed plate on your trailer. The winch includes a mounting plate that is 20" long and 7-3/8" wide.…

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Answer 3

The Bulldog Winch Trailer Winch #BDW10039 has a black powder coated steel body. The motor housing, gearbox, gear train, rollers, and mounting plate all have a steel construction so you can be confident this will not break like your Badland 12k.

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Answer 4

I have a solution for you to connect the Bulldog Winch Trailer Winch #BDW10039 to your vehicle's battery, but it will not work well for you to connect the winch to the vehicle's 7-way connector. The highest gauge wire a 7-Way connector is…

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Answer 5

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 6

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 7

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

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Answer 8

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 9

You will have to go with a sliding hitch to allow the trailer to make tight turns. For a trailer 8 feet wide the only bed length that's going to allow 90 degree turns without a slider is a stationary hitch. That being said you have two options.…

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Answer 10

Load range B trailer tires are going to have a lower capacity than C load range tires. Basically that, psi rating, and the ply rating are the only differences. A higher load range tire would last a little longer than lower load ranges of the same…

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Answer 11

To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose #8-258-5UC1. If the inner bearings are marked…

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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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Connecting Battery Charger to Two Parallel Batteries

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