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CR2430 Adapter to Wire Pigtail — image 1
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CR2430 Adapter to Wire Pigtail

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An adapter to adapt a CR2430 to any external power source without the need for soldering

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Creative Commons — Attribution

I didnt want to buy the CR2430 batteries for the Tuya 4 button switch, so I created an adapter to use 9volt clip connectors to a battery pack with 2 AA batteries with a 3V output. 

I prefer this solution since I can use rechargable AAs and the battery life should be significantly better than the coin cells. This worked well in my application because the added bulk wasnt a factor for my use case. See my remix of a Tuya 4 button switch stand for full details of the use of this.