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Does mini 12V DC diaphram water pumps like this get really hot after running for 5 min?

I'm trying to use it as a water pump for my aquarium. I'm using a 6V 4.5AH battery with a DC step up convertor to power the pump. After about 5 minutes it gets really hot. Is this expected?

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  • Yeah those things get quite warm. Did you check the data sheet? Also, make sure it's intended for a continuous runtime.

    • Actually I tried searching for it, but could not find the datasheet for it. This was given to me by a friend. I believe he bought it from AliExpress.

16 comments