What Happens If You Run a 12v Motor on 24V?

What Happens If You Run a 12v Motor on 24V?

Most times, we want to experiment with our gadgets, especially when it comes to switching to a direct current (DC) motor.

For instance, what happens if you run a 12V motor on 24V? A 12 volt car battery can be used to power your 24 volt DC motor.

What Happens If You Run a 12v Motor on 24V?
What Happens If You Run a 12v Motor on 24V?

To get the best performance from a direct current (DC) motor it is advised to use the same voltage power supply as the input voltage of the motor.

What happens if you run a 12v motor on 24V?

if you have a 24 volt DC motor, a 12 volt power supply to such as a car battery, and your motor will still operate, although the speed at which it rotates will be slower.

Will a 12V battery power a 24V motor?

Here is how to make this happen:

  • Cut a strip of dual-core AWG 18 gauge wire using a knife.
  • The length of the wire strip depends on the distance you need between the 12 volt power supply and the 24 volt DC motor.
  • Strip about 2 or 3 inches of protective plastic covering off both ends of the wire using wire strippers to expose the inner wires.
  • Use the wire strippers to remove about ½ inch of colored plastic off both ends of the two internal colored wires.
  • This reveals the inner metal core that connects to the 24 volt DC motor and the 12 volt power supply.
  • Locate the two terminals on the 24 volt DC motor. One is labeled “+” for positive and the other “-” for negative. Loosen the two screws on the terminals using a screwdriver.
  • Insert one end of the red wire under the “+” terminal screw. Insert the black wire under the “-“ terminal screw. Tighten the screws.
  • Attach the opposite end of the red wire from the 24 volt DC motor onto the positive terminal of the power source labeled “Pos” or “+.”
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Use a strip of insulating tape to hold it on the terminal, if the power source doesn’t have screw connectors, or if it does, loosen the screw and insert the wire under screw and tighten it.

Attach the opposite end of the black wire from the motor onto the negative terminal of the power source labeled “Neg” or “-“using the same method. Your 24 volt DC motor starts operating using a 12 volt power source

What happens if you hook a 12V trolling motor on 24V?

Here’s the caveat. Increasing the voltage on a DC motor (your pump) will cause it to run at higher RPM’s.

Since you’re going to almost double the voltage, that extra speed (assuming you don’t control it) will change the amount of fluid the pump is putting out proportionally.

With a fixed spray tip size, will increase the amount of pressure in the pump.

If that pressure gets excessive, you risk damaging some of the parts inside the pump, or perhaps shortening their life, since the pumps are usually rated for maximum operating pressure.

Now, if you want to run it flat out at the higher voltage, higher output setting, I’d get a bigger tip to keep the pressure within acceptable limits.

One final thing, which I doubt is an issue here – the insulation on motor windings usually has a maximum voltage before it starts breaking down. Going from 12 to 20 volts wouldn’t seem like something that would cause any problems though

Will a 12V battery power a 24V motor?


Different anglers have different experiences when they run a 24 volt motor on a single 12-volt battery.

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If your 24-volt motor has been built within the last few years, it may not run at all.

Many of these motors note when the voltage is below a certain level, like 22 volts, and will not turn on at all. This saves wear and tear on both your motor and your battery.

If your 24-volt trolling motor is older or has a more basic build, your mileage running it on a 12-volt battery may vary.

Some people find that their 24-volt trolling motor simply runs at half speed when they use a 12-volt battery instead of the full 24 volts.

The system might be experiencing extra wear and tear, but it does not always show the right way.

Other people find that using half the voltage damages their system. It can be very hard on both the motor and the battery to run your boat this way.

There are a couple of ways that damage can be done.

Motors running on reduced voltage tend to run hot. This heat will eventually burn out the motor.

In addition, 24-volt motors have armature windings inside of them that are designed for 24 volts of current.

If they don’t get that much current, they may run at significantly less than half speed due to energy loss in this current

Powering a higher-voltage motor is also hard on the battery. The system will constantly demand more power, while not using the power that it is getting efficiently.

This means that your time out on the water may be short indeed!

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If you regularly run your 24-volt trolling motor on a 12-volt battery, the battery will die sooner than it was designed to, too.

When its power is not being pulled efficiently, it cannot recharge or hold a charge properly.

Can you run a 12V motor on 20V?

The answer is Yes! However, it will run, but not for long. To run a motor it is necessary for the windings to carry current through it.

What happens if you run a 12V trolling motor on 24V?

Some people ask the opposite question: Can I run a 12 volt motor on a 24-volt battery. Once again, the answers will vary based on the age of the motor.

What Happens If You Run a 12v Motor on 24V?
What Happens If You Run a 12v Motor on 24V?

Most newer motors with computer controls instead of brushes will be irrevocably damaged when the too-high voltage hits the system.

On an older motor with brushes, you might get good power for a while. However, heat will become a problem once again.

The motor will heat up faster because of the higher voltage. Since it is not designed to dissipate this much heat, the motor will eventually suffer damage.

Some people, like the man in the video below, successfully run 12-volt motors on 24-volt batteries, at least for a while.