I need to control two 12v dc motors via remote control. And I these are what I need to do that. But they’re kind of pricey. Are they the only vendors that make this? Any suggestions?
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Hi @tonynsx !
These are not only products that you could use. See this comparison table: https://www.robotshop.com/en/comparison-dc-motor-controllers.html . We have a lot of them.
What is the power, or amperage of your motors?
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Ok thanks. I’ll take a look. The two motors that I want to use are both 40v each. I think 5 amp. But I’m going to connect them to a 12v battery. That means the 2 motors will have maximum 12v right? I don’t need the motors to run at 40v so 12v is fine.
The battery is 12v 18 amp
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Am I right? I don’t have too much electrical knowledge
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Yes, but you really shouldn’t put voltage on motor that is different than nominal voltage.
When you are choosing a motor controller you have to keep in mind the motor’s nominal voltage, continuous current, control method, and the number of channels.
You already mentioned that the nominal voltage is 40V so you have to choose a motor controller that works in that range. You mentioned that you have two motors and want to use RC so you need a dual-channel RC driver, you can find many options in the R/C DC Controllers section of the store.
And last but not least you have to find a motor controller that will provide current equal to or above the motor’s continuous current consumption under load. You mentioned 4A which seems quite low so you might want to check that value in order to choose the motor controller because if you select one that can’t provide enough current you might burn your controller.
Here’s an amazing guide in case you need more help:
Or you can give us more details about your motors so we can help you select one 
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